Sup guys, my mechanic says that it might be my rebuild carb on my 305 engine that its causing the lost of power, he checked the timing and its set right,but still slow and not going how it suppost to, so hes gonna do a full diagnostics on the truck, so if the problem its the carb. would it be good to re-rebuild the rebuild carb or buy a new one and which carb will i need for my 305 engine, i have a 1986 scottsdale 2wd...