burning oil

Sorry, guess your rings are shot.

Theres no way your intake can be leaking with you changing the gaskets so much.

Been nice if you could have used a diff. intake but I never seen one warp yet. Did you look at the intake ports if they had oil.

Funny its more than 1 cylinder. You know, like 2-3 cylinders going at the same time seems weird.

Maybe it was pinging and crack some rings but your compression seems good.