I had the same problem with both of mine from TWE. Ended up removing the caps, wrapping an extra layer of double sided-tape on the end of the handle so that I had to force the cap back on and then re-staple. I also have another 2 from other sources that I got a while ago and they seem to be fine.I believe they are glued and stapled, but its not the tension on the strings that is the problem. Every time I tighten my grip on the racquet you hear an annoying creaking/grinding noise and feel from the bottom of the grip. I had a friend try it out and he noticed the same thing. I just bought the racquet less than 3 weeks ago so I would rather them replace it with a proper one rather than tear the new grip off and put cement on it.