You just need to stop now. You are way over your head here. And I am saying stop before you hurt yourself or someone else. Your skill level/understanding of these engines is minimal. First off, you don't know where the low compression is coming from. Could be valves, piston rings, blown head gasket. So your nail file trick was useless. And thinking you changed the timing by rotating by hand. Can't happen. ALL OF THAT GASKET Material is not necessary, NONE! Lastly, this is a fuel injected motor that when operating properly will start right up and not need any excessive cranking. You totally missed something upon assembly and when it didn't start right away you should have stopped right there and diagnosed. Either do some research or take the car to a reputable shop.

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Dave S.
Northeast
2003 4.6is
2005 E53 4.4
2003 E39 Msport(a REAL ONE!)
1959 Fiat 600