So I’m having an issue that I guess no one else has had before. I originally started with a block with bad rings. I swapped those and the pistons out installed them changed the head gasket and head bolts torqued everything down correctly started it and it started right up took it for a drive, came home, and the next morning it wouldn’t start. After a compression test it had no compression in cylinders 2-3 and 60psi in 1-4. Now I took it all apart took the head to the machine shop to have it decked. After I got it all back together again with new head gasket and head bolts, it started up again, drove fine and had 160-170psi hot in all the cylinders. and again the next morning(today) it wouldn’t start. And has no compression it sounds like but haven’t tested it yet. What could it be? I’m so lost and don’t wanna take it all apart again without knowing what exactly is wrong with it.

00 Audi A4 1.8t ATW