This has to be something so simple - I can't see it.
Boring 2 holes for dowel pins, one for each side. The first one is sized at .252 and the second is at .254. Problem is the the second one at .254 comes out smaller that the .252 hole. Tried playing with toolpath settings, the only difference I could get is if I turned off "output arcs". That made both holes too small.
I have redrawn them several times - same result. I'm using .250 pins, so want a tight fit for the seat side and a little play on the receiver side.
I attached the small zipped drawing.
Am I crazy - or what?