I'm looking for the measurement from the centerline of the large selector hole to the centerline of the adjacent smaller hole.
I would pick up some demilled scraps for reference, but they are nonexistent right now. The torttort blueprint does not have this measurement
Thank you for any input.

I'm at work so don't have access to my reference files, but it should be the same as an AK. That should make it easy to find online.

Ok I have generally figured this out. The max distance of the "lollipop" through the entire axis is just meant to slip the selector lever in- no more.
I measured the max width of the selector, which is clearly contoured to slip in, at ~0.54"+.
I'll subtract the radius of the two holes combined and get that centerline measurement, and the unique clocked angle is 43 degrees from the top of the receiver.
If I need a little more room to get the selector in, I'll just mill the smaller hole a touch more outwards.

https://i.imgur.com/694Nh9P.png