Been on a Cat for a few years and have not paid to close attention to Ski-Doo. I picked up a used 08 XP 163 for my wife and to me it feels like the secondary is not working right. It backshifts fine, but the sled about throws you over the handle bars when you lift off the throttle. Is the new QRS really what I think it is? I think I might throw an older roller Cat on it, at least those worked. I know I have to swap the jackshaft, but I feel like Im riding a four wheeler with CVT clutches, and the compression brakeing. Maybe someone has some clutch suggestions for 6000'+. The wife gets to ride it tomarrow and I don't think she is going to like it. All my clutch parts are for the older TRA's and I haven't played with the newer ones much. Would like to toss something at it quick to make it smoother for her to finish the season with.