ive got a 03 660r, ive got a new aftermarket stator/pick upcoil. it is rated for an extra 50 watts over stock, an amr coil and stage 3 cdi box. prior to installing those last 2 electrical parts the engine is stock. i do have a lrd pro4 exhaust, the k&n air lid filter with the k&n replacement filter. the previous owner changed the needle clip from stock to number 4 position, he also was running in the left carb a 155 jet and a 150 jet in the right. the bike actually ran fine that way for months of owning it, and then after a week of it sitting it never ran right since. what it was doing is at an idle in nuetral idles great rev on the engine still fine, but when i take of and hammer down on it at a high like4-5,ooo rpms i loose power and its like the bike is still running but at a low rpm even though ive got the throttle half way, let off and it runs fine at a low rpm. ive tested the coil and the primary didnt test right, it depended on where i stuck the ohms meter probe on the base on how it would test. so i replaced it with the cdi box,corrected the jets to a 155L and a 170R, but still it runs the same as if i did nothing to he bike. HELP ME PLEASE!!!!!!