leaky heads gaskets, I'm losing it!

Am I using the wrong head gaskets
Easy enough to check, put the gasket on the head, line up the bolt holes check all the passages.

Use the same gasket on the block do the same thing.

If all the holes are correct it's probably not the gasket.

Maybe you have a crack in the block that opens when the bolts are tightened?

Don't some of the head bolts penatrate the water jacket and need propper thread sealer to seal?

Could it be coming from the intake?

Are you giving any sealer a day or more to setup before putting fluids in?