Bridge pin ponder.

blues90 ,

Generally the quality of Bridge Pins are poor.
When I get a new guitar I do a set up, fit new strings, also check the pins and the holes in the bridge, it's not uncommon for me to have to tidy up the holes, I use a rat tailed file, the pins are plastic and it's not unusual for them to be to tight in the hole and chewed up a little, use my sharp pen knife to scrape the pins smooth and to remove any burrs some times use a bit of sand paper.
I don't mind doing this as it only has to be done once.
I've never bought a set of bride pins, I have a few spare as with a new guitar you usually get a trussrod alan rench and one or two spare bridge pins.
I don't think you get any advantage by used different materials for bride pins,
An other thing I've always done is when changing strings, is to keep the same pin for each hole.

This is the first time I have had pins that fit so tight. When I put the one I pulled back in I would have stopped with the skirt close to 3/16" high. I didn't try all , just the high E.

I looked on You Tube only found two videos one showing a guy with a pocket knife used as a scraper on a plastic pin just enough so it seated flush like the others and another using a drill to rotate a wood pin wrapped in sandpaper doing a trail and error method. Most all other videos were how to replace strings.

In my opinion a pin should go in light pressure and stay with the string out and fit the taper of the hole.

Seems like they want you to buy an expensive reamer or take it to a pro rather than just do it right at the factory.

Other than my Eastman and maybe a Seagull S6 in the dim and distant past, I've never been 100% happy with the pins that came in any of my guitars. The worst were probably the ones in the Seagull Mini-Jumbo. Now, I bought it used and there's no telling what it might have experienced over time. But those pins even looked cheap and chintzy, and they were way too big for the bridge holes. The plastic D'Addario pins from GC fit better, but I wanted wood pins. So, I bought the D'Addario ebony pin set at GC and used my pocket knife to shave them to fit. Someone on here gave me some grief about that, but they fit, the string ball end stays where it's supposed to, and the guitar sounds fine.

I got the Tusq pins traditional white black dot they are 3 degree but the collar is near .210" The spares I have are .2085 and the plastic stock pins that fit so tight are .1980" . I did find the all black Tusq presentation pins on Ebay for $20 and there collar is .194" so based on the tight fit using the plastic ones these should fit. I used the same ones in my other Recording King but those are white with a pearl inlay. I am fine with all Black. I had to file small slots in the pin holes on the other RK but on this one I may just use the same needle file and file the pin groove, The presentation pins have a larger head and a C shaped groove rather then the sharp edged U shape like most pins have. and are also 3 degree taper. The shank is also a bit shorter but long enough to go well past the ball. I don't see anyway to turn down the other set I got from Amazon which are the traditional pins. I tried and may try later or fit them in another or return them. I tried to chuck them in a drill but they sit to far in unless I try in this cordless I have , doing it by hand is impossible to hold the small head .  I'm just not going to battle tight pins every string change and man these are tight. And for some reason the pins RK uses and Seagull and even the Luna have the slot cut up through the skirt as seen in the links above and they need these so the string has room the other types won't work. They are a 1.3T pin.

graphtech.com/pages/tusq-bridge-pin

blues90, my experience, with mass produced products, has been the allowable tolerance to pass QC inspectors is the industry standard, also that only 1 or 2 in 10 or 20 or 100 (or any arbitrary number) is all that is checked. And also, with my cheap digital calipers, repeatability is fickled.

blues90, mine is a cheap plastic one I got from Home Dept- 20 bucks ims. I've learned how to deal with it, but it's still a cheap one and aggravating to deal with, because I have to measure whatever I'm measuring several times and figure out a happy medium... for instance, measuring saddles, I rarely get repeatability... pins don't seem to be as difficult as a saddle...