The M20A1B1's vn_m20a1b1_01 zoom level is really weird. It seems to be somewhere in between normal seeing and the eye-zoom (when you hold zoom in while not looking down any optic). That means that if I am not aiming, but using the eye-zoom and then I aim down sight, the stuff I am looking at gets smaller looking! In the config viewer the zoom is set at 0.5, which seems to be the amount it's zooming out from the eye-zoom.