For anyone using gaskets anywhere, I can’t recommend highly enough “permatex aviation form-a-gasket 3” on them all. I see people using motoseal or threebond on gaskets, but I can assure you, you’ll much prefer the above. No need to rush to get parts together as it doesn’t dry, you can remove and re attach the gaskets and they don’t tear, it seals imperfections, it is easy to clean up and is fuel safe.
I’ll just apply it with a paint brush, let the gasket air out for 2-3 mins, put it in place (it also sticks the gasket to cases so it doesn’t fall around or off), bring the parts together and then I’ll wash the brush it in acetone for next time. It smells nice for a sealant too.