I have recently got a new bike with Flashpoint 60 wheels. The wheels come with some factory valve extenders on them which seem pretty poor. My rear tyre has deflated slightly and I am trying to re-inflate but I can't get any air in. Has anyone had these problems before.
They are not like normal extenders and do not have a screw in end to release the air so I can't even fully deflate and change inners. Any suggestions would be appreciated.