I have the three bearings in there and I can get the piece of conduit in there but it is pretty hard and after it’s in there it’s pretty hard to move. So either I am printing too small or I got the wrong conduit.
Those parts look good to me. I haven’t got mine running yet, but my fit is very similar. I think a lot of the problem is that I bought EMT with galvanized texture on the outside, and folks here say that will get worn down.
If you’re worried about scale, try measuring the extreme x, y, and z and comparing it to the STL. I would guess that any stretch would be uniform across the entire part.