just a question,I know that Kawie did'nt change the profiles thru their production,but my brothers '97 acts completely different than my '02.His machine is much torquier right off idle than mine-my motor will have that knock,knock,knock down low.His is clean all the way to the rpm limiter-my motor runs like a 2 stroke,a lil' flat then takes off like a scalded dog,no missing they both run perfect.Both machines are identical with tire size,gearing,pipes,jetting ,etc. just curious? For any of you mojave guys if you have'nt checked out CWR,go to kawieriders.com GREG is the man