I have a 1998 powder special with the 600 efi. The problem is it feels like it is loading up when you are running around 6500 rpms and below but when you crack the throtle and run the heck out of it dosent seem to be missing and runs smooth. infact the warmer it gets the worse it seems. It starts great but the plugs look very wet. It is like the efi is pumping to much fuel on the low end. thanks any help would be great.