Right, the pervious owner gave the builders a call on my behalf, and to cut a long story short they have agreed to at least inspect the pistons



They were saying they couldnt have damaged the pistons due to the way they grind them, which means it could have been done at accralite.

NO DAMAGE at all has been done to the pistons while IN the engine, pistons were damaged/machined wrong at some point before going in the block.

Still SOME progress is GOOD progress.