I just bought a 2005 Suzuki RMZ 450. It is usually hard to kick(seems kick start arm isnt right)but it does start after a few kicks. Once started it makes a pretty loud clanging noise. I've had a 05 Honda CRF 450 and it did the same thing but not nearly as loud. So im thinking either it needs a new top end or bottom end? Can anyone tell me what I need to do to check whats wrong? Also I checked the compression last night and its only at 120 PSI.. is that too low? Please help!!! I am not mechanically inclined Thanks for your help!