I've bent the rear axle on my cheap a$$ MTB that I use for going to skool for the third time and I took it to a bike store with some really good mechanics and they reckoned first of all that im a "munter" on my bikes (My road bike hanger broke cause I crashed it etc etc) and that the fact that I have a screw on cluster and something in my riding technique, means that the axle keeps bending....they say that a cassette version of the wheel will solve everything?

Any comments?

Brendon