sorry about the not elaborating and my name is mike. When i try to adjust the rockers i tighten them untill the push rod gives resistance then i can only go an 1/8th of a turn no more or else it seems like i have over tightend the valve becuase it starts to backfire or whatnot. but if i go any less the valves tap like crazy so thats why i was wondering if i needed longer push rods i cant see anything binding but i am not sure