Okay... here is an easy one for everybody. Let's say you put a new valve plate in a compressor, you also change the head gasket with material you have in the shop.

The tech is an above average technician... all electrical is correct, system was evacuated, no leaks and the charge weighed in with a clear sight glass. What is the probability that something may have changed and what is it?

Sheesh, I make these WAY too easy.

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