I'm a little late to the game here, sorry blush

Unless your crankcase is experiencing some extreme pressure you should not be leaking between the oil pan/gasket/timing cover/seal retainer and I doubt that to be the case because, as stated, the rear main seal is dry and no mentions of leaks anywhere else.

I suspect your choice, application or method of using RTV sealer for the lack of sealing ability.

1) Use Permatex Ultra Black or equivalent.

2) Remove all traces of oil and apply an 1/8" BEAD to the areas of concern. Do Not spread sealant with your finger.

3) Install oil pan and gasket. Tighten bolts just snug enough to disperse sealant. Do Not allow sealer to skin over.

4) After 12-24 hours apply full torque to the fasteners.

5) Fill with oil, start and check for leaks.

Thanks,I appreciate your support thumbs