had the exact same prob with my eddies and 1.6's, i pulled the intakeput a big shop towell to cover the lifter galleyalong with plastic and more towells, then covered the heads up good except for the pushrod holes, found a drill bit a little bigger than half the hole size and put it on a drill, saw where the pushrods were hitting and went to town, i got my dad to hold a shop vac hose directly underneath the pushrod hole while i held the drill full throtle and moved it up and down to get the needed clearance. yes it is time consuming and is hard to do by yourself and hard to keep shaving out, take your time and wrap everything up good and it works fine. have had no more problems with mine and it works fine. also the crane and comp pushrods are different lengths, can't remember which is longer or shorter but one of the books aren't correct, whichever is suppose to be longer is actually shorter, i think don't hold me to that its been a while, i got some extra clearance like that to, i think i ended up using the crane pushrods, they had a little more clearance than the comp, but every motor is different, good luck:-D