I do not know if anyone has already asked this or not. So, I will.
I understand that your taiwaneese manufacturer mangled the receivers. And that the pin placements for the trigger group are off to the point of total malfunction.
So, here's the question: Is there a compelling reason not to save those annoed, 90% receivers, and sell them slightly discounted as 'airsmith specials' much like the Merlin Blanks that Airsoldier sells?
Somewhat like AGD selling the Sluggo bodies, That became so popular once people figured out what they could do with them.
Maybe I'm the only one that wants to put a H8TR in a nice Mini-14 stock, with a Blackheart board telling it what to do.