DD19 Front Rail Never Fits Perfectly?

I've tried various rails providers, such as Aves, jc-arms and parts-dispensed, but none of them ever fit in the frame perfectly without rattling or moving around, or they don't fit with a gen 3 spring front pocket. Essentially, none of them fit without wobbling or having the pin walk during working the slide or dropping the slide stop and letting it go forward on its own. I use a P1S, have ran the auto calibration and calibrated temp, pa, flow, etc. I've watched the DD17 assembly video by Ivan several times, and in his video, the rail go into the front pocket with minimal wobble, then he installs the pin, which needs a hammer, but every time I print a frame, I insert the front rail and the pin, but it'll rattle with a lot of extra space and move around in the frame instead of having minimal wobble and being tight into place. Why is this? Is there something wrong with my printer? Or is it the rail providers?

My problem with Aves is that when I installed the front rail and inserted the pin, it wouldn't be tight, and I could move the rails side to side, which causes the pin to walk, and the front rail would also be able to be shifted upwards when I use my finger on the rear of the rail, which leads to it no longer being parallel to the frame until I release it with my finger.

jc-arms has been better, but they are out of tolerance when trying to use gen 3 spring frames and you have to tap the front rail in very hard, but the pin still didn't line up.

parts-dispensed also has the same problem as the Aves and the pin isn't tight at all, and just falls out.

I use the correct sized drill bit and have no other problems with frames other than this front rail. Any ideas? Because I've been at this far longer than I'd like to admit.