olliedt

hi there just joined the forum so hello! just wandering if any of you lads could help us, my 2000 plate dt125r loses power when i hit the powervalve, its fine up to 7000 rpm then its just gutless. it still revs round past 7 grand but it seems like the powervalves not kicking in or something, ive tried most things like new plug, cleaned out exhausts, bleed the carb etc... but im now im stuck for things to try? i was thinking about a new ht lead or looking into the ypvs servomotor. have any of u lads had the same trouble cheers ollie