500rpm

hi all, i'm new on the forum and to the aprilia, i've recently noticed that the revs seem to drop about 500rpm when i come off the throttle in all the gears from about quarter throttle and up, seems to be there the whole way through the rev range. it doesnt seem like i have any clutch slip on...

This is getting more frequent now and its starting to really get to me. Every now and then i am getting a misfire and im worried to give her the beans as its bound to happen and lunge me forward on the bike followed by the reverse. I have also noticed a definate dip in power between approximatly...