WHAT do you do?

I don't trust anybody setting up my head's.
They supplied new parts, rare. You're doing good. The block... well.. been there.
I blew a piston and there was no recourse...so I had to buy the rod, new pistons, bearings, rings, gaskets... and go and pull and buy a block@$250 and take it to have bored .020 over and prepped @$400 bucks.
Ouch...