I think you can probably drop the calories quite a bit. Their advice to keep your metabolism up was aimed at obese people whose metabolism is at a stand still. I think you'll be find dropping the calories to around 1000. If you have enough energy to train, I think you're doing fine. Of course, I'm basing that purely on, well, nothing really.

How long have you been doing this training for? I would think just cutting back by 500cals a day will eventually have noticeable effects after 3 weeks and still provide enough energy for training. The weight should fall off gradually after that. Also you don't mention if you do any weights...doing weights 2-3 times a week even for 20-30 mins (for endurance phase is normally high reps, lower weights) will mean greater muscle mass and muscle always burns more energy between workouts...also consider that maybe your body doesn't need to lose weight, maybe you just want to lose bodyfat and turn it into muscle. Weight gives you no indication of bodyfat vs muscle.

Cheers!!

This morning I weighed in at 187. Same age. 2 inches shorter.
Working out 6 days a week, let's call it 60-90 min average per day. I have the same goal weight of 175.
I've been eating 2000 calories a day for about 3 weeks. I've lost 9 pounds over those 3 weeks.
I've been averaging 33% on carb/fat/protein. Not ideal for training but it has kept me sane on the diet in terms of cravings and feeling hungry.
The one day that I only ate 1500 calories I completely bonked on the evening workout. 3 weeks in and I'm starting to feel that I might have to take a few days off the diet to boost the glycogen stores. My legs are starting to feel fatigued quickly. (not surprising).

Can't say for sure you will have the same results but I was surprised at how many of our numbers matched.
Oh, I decided on about 2000 calories because I read an article suggesting to eat the calories needed to support your weight if you didn't exercise at all. Then lose all the weight via calorie deficit through exercise.

I'll race you to 175! Might be the only race I ever win.

Good luck

if you're not already doing what ironadge is suggesting, that's a great place to start without modifying the total amount you take in

A couple of things.

First of all, I think that you are doing a great job and being nicely conservative with your attack at this. As far as your calorie restriction, you are doing pretty good, and I am sure that if you combine hard work with that, results will eventually come. The problem is that you may have reached a plateau in your weight loss, which means you probably need to try something new. Think of it this way: We're all endurance athletes. Training our bodies to endure severe circumstances for sustained periods of time is great exercise. Most people drop quite a bit of weight training for their first marathon. But eventually, they won't lose much more weight from running. Why is that? Well, there are a couple of factors. But, a big one is that their body has become very efficient at running. Their body has figured out how to make running less work, and burn less fuel. So, to compensate for that it's always good to mix it up every once in a while to keep things fresh. (plus you'll have a lot of fun). I like to rock climb, or play soccer to keep things fresh. Maybe you like basketball, or Boxing? You get the idea....

Second, I think that people here might be missing one of the most important parts if calorie deficit calculations. Let's go back a few steps. First, you have to calculate what your Resting Metabolic Rate is. There are tons of resources on the internet that can help you calculate that. (Search "RMR calculator", or "BMR calculator") From there, you can begin to look at how many calories you need per-day to lose, maintain weight. Let's say that I have a BMR of 1750. That means, I am burning 1,750kcal just sitting on my ass in front of the TV. So, if I ate 2,000kcal, I would have a surplus of 250kcal. But, if I do some exercise I am going to find that I have burned some calories. So, let's say that I ran about 3 miles, and burned about 400kcal. Now I'm back down to 1,600kcal—a 150kcal defecit from my BMR, resulting in some marginal loss.

Here's the key with that... I remember reading an article that talked about how athletes can actually lean-out more when they eat more rather than less. The logic? With more fuel you can train harder, and you can create a bigger calorie deficit from training than you can with calorie restriction. So, when calculating your deficit, make sure that you are taking into account how many calories you are burning with your exercise.

Finally, if you really want to be picky about it, consider eating less fruit. Actually, eat just as much fruit, but change when you are eating it. Eating fruit in the middle of the day really doesn't make a whole lot of sense if you are not going to be working out. Remember, fruit is SUGAR. (Frutcose). So, if you eat fruit, then sit in front of the computer, you've just given your body an excuse to not burn fat or other calories that are already in your body. If you are really counting on that fruit as a snack, just make sure that you pick something high in fiber so that it will keep you full for a while. I'm not saying fruit is bad for you... just saying that it matters when you eat things.

I wouldnt restrict calories as a whole. You need to eat enough to allow you to train. Instead of scaling back crazy amounts of food, simply eat more veggies and fruits than proteins and refined carbs. Eat a decent breakfast, snack on some fruit, moderate lunch, another fruit snack before exercise, and as little as you need to refuel after your evening workout. I find busy foods help reduce hunger. Popcorn, sunflower seeds, etc keep your mouth busy without a whole lotta calories.