Well got my 09 rmk 700 back....had 411 miles and engine was knocking....exhaust side of pistons were scored....got new pistons, cylinders and dealer got it back together real quick for me...2 weeks and I got to put a 100 miles on it this weekend....seemed to run real good. Mech said he adjusted tps as well and I did not notice stumble/bog...but again have not had it at a higher rpm yet.....Hope all is well - feels stong