I think two things. One bolt was tight, the other finger loose. Which is correct? In the rebuild they probably have a torque. Search online and see if you can find it. Also, second thing, wondering if any of that "gunk" or oil went past and is in the pressure relief valve. Just wondering out loud. Hey, this way when all is said and done, you will know this compressor intimately and will not be afraid to tear into it if it ever needs it again. This is how you look so wise in your old age, when your grandson or nephew has it in his shop and you are dottering around, he says something about it and you don't mention any of the past problem but start telling him what it looks like on the inside and right off the top of your head tell him how to fix his problem!
God and family, the rest is icing on the cake.
I'm so far behind, I think I'm in first place.
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