Yea, i feel pretty stupid for buying the reman ammo from freedom when their new ammo is just $0.01/ round more !!
You should not feel bad at all. Lots of ranges and training facilities use reman ammo, it's a part of life, the gun should run just as well with it as your other guns do.
I really expect the problems to be rough spots on the slide, breech face, and feed ramp. Any increased friction slows things down and it takes two
rough surfaces and that would not be unheard of in a new RAMI.
An extended break in period will smooth things out and you may have better luck with the reman ammo. Customer Service is particularly adept at smoothing those spots out if you don't mind sending the gun out.
I would like to hear what happened with the plunk test as I have seen short chambers, but that is really rare. I have yet to see a tighter than spec chamber, but I hear they do happen.
If you're happy, that's what matters!