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Cometics makes a 0.051 gasket for most motors.

1994Vmax

iTrader: (4)

Need a thick gasket.... with a 22.5 thou protrustion and 51 thou gaskets you are still sub 30 thou range for quench. GM MLS gaskets are all around the 51 thou range compressed as well. I would say the wrong pistons were used as usual protrusion is in the 10 thou or less range. It's not a terrible thing to have tight quench as long as your piston to valve is okay.

03sierraslt

iTrader: (22)

My new motor is .047

Atomic

iTrader: (42)

Cometic can make you any MLS gasket you want up to 0.125 I believe. Mine are 0.080" cometics.

skolman91

iTrader: (28)

Indeed they do, ive got a pair of special order .030 cometics ill sell ya ill probably never use. you could stack them on one side and get your .060

Skip Fix

Chevy stacked head gaskets on the old HiPerf 400 and 425 hp 409s to kill compression a little. Most racers just used one-but that was back when you could get good octane at the pump!

Another thing to check will be head to intake alignment if the intake needs milling.