Yeah dealing with a bad shop sucks. hope it gets worked out, but as far as them not saving the old parts goes that's not a huge red flag.

I ran a transmission shop for a long time we averaged rebuilding 15-20 units a week so if you didn't ask me to save the old parts I didn't.

If I had saved all those parts until people decided to come get there cars I would have a shop full of garbage.

Also all the reman converters are sold exchange and when the converter company left the remans they wanted to pick up there cores so you would have to inform me you wanted to see them so I could hold them back.

That being said I always asked the customer if they would like to come and look at there unit after it was disassembled for inspection so I could show them what was wrong with there unit.