About a week or two ago I was tearing down the motor and I noticed that one of the pedistal mounts was broken in two. Might have also been the reason for the rough running. I though it was because of the nut that fell into the lower intake that I did not know about until it was too late. Well, the nut was shattered and did no harm to the piston or the head, and the RR pedistal that was broken wasn't the cylinder where the nut broke. Called Crane Cams and ordered some new pedistals, the whole set for $11!!! Has this happened to anyone else.