New to me, new top end, gnarly pipe, new Q silence, new clean airfilter, new plug. stock carb/jets which are cleaned spotless. This thing starts and idles great, has a very very very brief mid range and nothing on top, just sputters almost like the choke is on. could this be a clutch slipping issue? I did search, i know i should do the airstriker swap and play with jetting, but this thing should have at least a hint of top end even if it is jetted poorly for the pipe/silencer combo. The stock carb has worked fine. i had a cr125 and never had to touch the jetting. I do not race and i do not need it jetted for max/perfect power. just need it to run harder than the 125 i had, right now it doesn't. What do you think, change the main jet, change the pipe combo, how would i tell if it's something completely different... like the clutch? Sorry this is so long, i had it layed out alot nicer the first time but it logged me off. Thanks in advance and if you would rather me just continue searching i most certainly will....you've all pretty much answered every other question i've had by lurking and searching, that's why i don't have any posts, thanks again.