I know about the frame and the axle, anything else that seems toi be a problem, I think I'm going to buy one within the next 2 months and would like some input, Thanks

 

Well the frame is supposed to be a problem. I ride mine pretty hard and haven't broken it yet (though I stop and check every time I land hard, LOL!), and the axle is supposed to stronger on the Z's that are newly released. The only other problem I've had is a squeaky brake, but nothing big. Good luck