Before machining anything, do this simple test to ensure that the stator is not cocked in relation to the rotor. At the tightest point slowly push a feeler gauge straight in. If loose at first and then gets tight before going all the way in the stator is likely cocked. Another way is to find the feeler gauge that will go all the way in and see if a thicker one will go part way in. The spacers in my experience are NOT precision, often cause a cocked stator, and can often be moved around to eliminate the problem. If cocked and not caused by the spacers, most likely the inner primary is incorrectly installed and/or shimmed.
Fast Eddie's way certainly takes away the PITA but since I don't have access to a lathe, I try a little harder and have never had to turn, file, drill, or bend anything. I do lightly use a tapered hand reamer to slightly open the inside and outside of each whole, but that does not make the hole larger all the way through.
