03 kx65 trouble
 

Hello all., looking for some help. My son's kx65 was running great. Started right up, idle great and pulled hard thru the gearbox. Was looking for a little more bottom end. Put a uni filter on and it seemed to bog the top end. Anyway I went straight for the needle clip.i know bad move, now it keeps loading up with fuel even when I put everything back to prior . My son is not happy.
Even went back to the original air box. Bought a after market carb. Same thing. So how did I screw the slide and needle up.
Any info , help would be greatly appreciated. Thanks

When was the last top end done? Boysen reeds may help, bus sounds like the ring is worn.

Good luck