How do you then fix a tight nock without replacing it should you find some in your quiver?
I hope I'm not jumping out of turn, but you can buy more of your brand nocks and sort them 'til you find good matches. Or, you can do what I do for indoor target and buy "premium" nocks like Beiter brand (which can still, on rare occasion, have imperfections). Or... I've seen where guys set up a drill press with the appropriate size bit for their nock and "slide the nock" off and onto the spinning bit a couple times to get them all "uniform". (I suppose you always do have the fourth option of not caring too. )