here is a really handy tool for doing oil pan gaskets. screw them into the block, slip the gasket over them and it hangs there ready (or sticks to the aviation form a gasket) and then the oil pan snaps over top of them and hanges there until you are ready to push it up on the pins, which aligns the pan to the block. I have several of different sizes.
https://www.amazon.ca/Fel-Pro-ES-728...65cfd151f0873a