PRS ACC-4261-I Pickup Frame Ivory

Those frames does not fit with non-USA covered pickups. The hole is too small and the humbucker won’t go through. I believe it’s due to differences in measuring units, metric vs imperial. I tried fitting different covered pickups, from cheap Chinese ones to handwound boutique made in Europe and non of those goes through frame hole :/ It’s a massive let down for me, cause I wanted to core-fy my s2 prs, but i would have to change pickups for some us made, and I am not willing to. Bummer.