This is what we run in to here. Hate to say it, but you get what you pay for. I'm not "snobbing" anything, I ain't about that. However, you build a gun with quality parts, and it runs. Pick the parts yourself, and do it wisely You buy a budget gun, and you better be prepared to work on it to get it to do what you thought that Knight's SR25 was gonna do (Yes, I know the difference between the Remington R25 that you referenced, and the KAC SR25, and I'm using the SR25 as the dollar/quality reference on my own) . That PSA dollar comes from somewhere, and you got it cheap for a reason. Compromise was made somewhere.
At least you are here, right now, painterman, figuring out your gun. For the most part, the budget price of the PSA attracts the "budget people" that think everything had a lifetime warranty, and it should run out of the box just like an SR25 - and that's just not the case. I hate - HATE - arguing with those "budget people" over this shiit. PSA doesn't care, either - they already made their money...