slip85

iv been over this bike again and again but it still shutters like crazy at around 170 to 185 temp any ideas on where to start iv checked everything... well everything but whats causing it. when i grab the throttle to pull a wheelie it pets great then instant nothing thus throwing my ***** into the tank its quiet frustrating. if i let the bike cool down it runs amazing. the fans are on a switch the whole time. im at a loss ....