I have assemble over a dozen heli's from many different manufacturers - miniature aircraft, hirobo, thunder tiger, align, outrage, sab, and avant off the top of my head.
The part I do not like is to unscrew everything to rescrew them back in, it is tedious. Then the tail grips were not due to tight tolerance, whoever put it together in the factory had some Loctite in the bearing, gluing it to the tail hub. Heating it did not help much, I had to punch it out.
I will send you a PM with my info and I appreciate you taking care of this. I just look forward to flying it as it should be a much more pleasant experience.