I never had a problem with my 02 viper besides needing shock update and I personally think she rides fine setup for your weight. Always wanted a expert x in it but didn't want to spend the dough, I ride with revs and f's in newyork so I'm beating on it in the rough in tug hill area. Short story bought a rx-1 with an expert x never looked at the setup and was thinking I would have a great ride needless to say second ride with my son I was coming across a field and decided to see what this thing ran like hit a major dropoff and it felt like I just rammed a sledgehammer up my a$#@ I suffered for two weeks and I told my wife that my viper would never have done that to me, there has to be something wrong with (shocks, setup ect.) recieved the instruction for the suspension setup and the thing was so far different in many ways with the setup spring adjustment, Shock angle, softnes adjustment readjusted it right and the thing is like gold now. M point is something has to be setup or wornout because the beating that thing gave me something was bound to break and at the time I was praising and wishing I was on my viper at the time.(but not now, no parts were needed in my case to fix my suspension problem)I hope you figure it out, I guess my point might be setup is everything. My viper is set close to my book with updated shocks. Hope you figure it out.