[vectorit]

I've found that there are variations of the tin, as far as the year of manufacture for them. Things can get sloppy if you use a late model timing cover with early style pans, so I always try to keep those two pieces as a "matched set".

Chrome IMO is garbage, and are a PITA to seal.

If you over tighten a cork gasket, you can actually cut it down the middle. Then when the engine gets warm, and the oil starts splashing around it will seep past.

The front and rear areas are typically sealed with a thick rubber gasket that fits into a slot in either the T cover or the rear main, and for me I have always smeared on a light dressing of Permatex Aviation form-a-gasket in the groove. Then in the corners I put a nice dollop of RTV silicone, but wait for the silicone to get tacky before you put a squish on it.