The pan is off in my  57-312 car re oil leaks. #1 counterweight is marked; M .030, T .020 & BB 35, & dated 1966. (Block is a B9AE) There are some other markings further away but they are unreadible.  Presumably M is mains, T is throw or rod, but what does the BB 35 mean?  Also, the M .030 concerns me some as I've never seen Main Bearings for 312s, listed beyond 0.030. Does that mean the mains can't be turned again ? (except for a 272-292 conversion ?) Had the pan off about 3 years ago, but think the gasket was damaged or didn't seal on reinstall, so, need advice on getting it sealed, keeping in mind that install clearance is tight. I'm planning on puting the gasket on the pan with Permatex High tack 98 H as it's recommended as a locater sealent. Is that a good choice?   But, what about the top side of the gasket or crankcase side? Keeping in mind that the pan has to be slipped over the crossmember & clearance at the rods is tight. I suspect silicone based sealents may set up to fast. Recommendations appreciated..Thanks


Paul