Might also be a slipping clutch. Might be worth it to check how tight the clutch is set. I had issues with my stock clutch within the first 20 hours of riding, and it would engage hard then slip at high rpm. just my guess.
08 Honda 700xx
11.0:1 CP Piston || +3 Throttle Body by Cuervo Racing || Web 290 Cam
HD Web Valve Springs || Hard Rockers || NGK BKR6EKPB-11 Laser Platinum spark plug
Modquad Air Flow System with K&N Filter || custom mounted trail tech vapor || Modified air box lid
DMC Afterburner full exhaust || EBC Dirt Racer Clutch Kit w/Cuervo Racing springs || PC3
Rear 22" Kenda Kutter XC tires || Rear 22" ITP Sand Star tires
Dyno Tuned by Cuervo Racing @ 53.82rwhp & 44tq