I put a 1/2 second fill of gas in a little while after sealing them up. I needed to be sure that I had a proper seal all around. I had a couple really wonky main seals that deformed to about 4-6mm larger than they were suppose to be when coated with a little 25 weight silly oil. They eventually shrunk back to original size.
I'll be sure to vent them before test firing them in the gun.
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