Hmm... my math says #5 is at nadir when #1 is at 108* ATDC. The same math says at 36* ATDC #1 you get all the pistons as low as possible. Check oil level before and after to see if a significant amount of MMO leaks past the rings.

Given the cant of a 60x, I wonder if the ring circumference will soak at only 36* ATDC. Roll the right side wheels onto 2x8s to level the deck

Sixto
MB-less