[sduckworth13]

I know the feeling, I had bought a 1967 GMC from a guy and he said rebuilt the engine and he put 5000 miles on and parked it. Mysteriously kept breaking rockers arms, 4 times that I recall. Wound up being my lifter was sticking. I did learn real fast how to set valve lash, so I guess it was a pain but a learning experience too. I wound up pulling the heads off of that engine and having it all checked it. I put new valve seals in too, so it quit smoking also which was a plus. *edit* Actually might have been a bent push rod and the lifter is what made me tear it all apart