I got mine working fairly decent after doing the off-road needle, float kit (including some foam in the chamber), modifying the cross over, fuel pressure regulator, and power braking while going up hill to keep engine above 1200rpm ... all that helped, but didn't fix it. After ballancing on the very back of my rear bumper a few too many times due to the carb cutting out while climbing, I ripped it out and built up an SEFI system.