I sent a broken turbo action converter to ptc to have it adjusted and repaired. Kenny himself texted me pictures then called me to see what I wanted to do with it and talk about the engine combo. If he's still involved I would not even hesitate to send it back to them. If he wasn't involved, I would do my research to make sure the quantity was the same then send it in.
I have a belief, If you learn from the best, you will become the best yourself. I have never dealt with PTC or any other outsource companies for transmissions, but they sound like a solid company to deal with.