I jumped someteeth on my timing a while back, finally got a refurb head with new head gasket on the motor. I first used a cometic head gasket with arp studs. I torqued the head down correctly and in the rite order, a little at a time too. I put it all backtogether and start it up and it runs for 5-10 secs and stalls out. I take it all apart and figured out the headgasket went out on me. so I do it again cleanup the gasket torque it back, Try again starts for 5-10sec and stalls and looses all compression once again. I get a gasket that is material and try that, Starts for 5-10 sec and dies out, so now I use gasket maker on top of the material gasket and then try it and it happens again. Im cleaning the surfaces before mounting the head with break cleaner. And the past time I used a 5in rotational sanding bit and lightly touched the block with it to get anymore of teh old gasket off... Ive done it all and its not working,.... ANy ideas? It also shoots white smoke out b4 stalling to its death each time. I loose compression in all cylinders everytime