I imagine they are clacking as you go down the highway, just can't hear them until you come to a stop. I did have one completely colapse before I got the situation somewhat under control. As I said, my next engine will have solids.
Grant 1950 Chevy 3100 1952 GMC 150 (In Pieces) 1968 Chevy K20 1966 Shovelhead 1978 BMW 100S