Update: I took it to a shop. It doesn't fit in my garage and it's too cold to do it outside. They pulled the intake and something fell into the head, which made a whole lot of noise when it was reassembled and started. This resulted in a shattered piston, a beat up head and a decent sized scratch in the cylinder wall.
They want to hone it, replace the piston. Have the aluminum head welded and milled and to be done with it in general.

Sounds like they want to give you a half ass repair for their full ass screw up!
Sorry NO! should be your answer. To many other components could be damaged that we don't even know of yet. I paid for professional shop repair and you made a big mistake, now find a new motor to replace your mistake. We know how this will end in small claims court!


