Yup, I agree. From what you've said about this guy it wouldn't surprise me
if he wouldn't 'stress' a core you supplied so that a hose-tail weld was
just short of cracking, just so he could say "I told you so" and get another
job fitting his core.
I think you're right to be looking for a new service outfit.
Best of luck.
"Humans will have advanced a long, long, way when religious belief has a
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