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Back to the same old problem. Even though my engine runs well with the new cam and all, upon first cranking from cold, sounds like the bottom is about to fall out of the thing. Very disconcerting. I have this awful racket from somewhere in the bottom of the engine that sounds as if my crank is about to fall out, as best as I can describe it. I have used my stethoscope everywhere in hopes of pinpointing the darn noise but to no avail. After it warms up, the noise seems to dissipate and pretty much goes away. Pretty much meaning I can faintly hear some of it, I think, when lugging. Sounds like the crank is out of balance or about to lose a few bearings. I miked some of them when I had the pan off, but not all of them. If it was a bearing issue, surely this would have manifested itself as a blown engine by now. I have driven it spiritedly for about 2K miles since the overhaul. I need an experienced TR mechanic who will fly in for the day, listen when I crank, and say "Ah HA!. That is ....!" Taint gonna happen, I guess. This is a revoltin' development.