As for sanding the holes, the short answer is nope!!!!
Every thousands is important for either maintaining, or re-establishing the correct head space! In fact, a tight closure on the "GO" gauge is desired..
Install the middle toggle, to rear toggle, link pin and see how it feels? If just a little snug, oil it up and work it back and forth thru it's, "working range" don't work it too far as it will remove the blue on the rear toggle knobs!
If then too tight, use a little fine lapping compound. A spot of that, and a couple of cycles by hand, and it will loosen up immeadiatly. Be carefull and don't over do it. Check the rest of the pins in the same manner. toggle should be free, with zero endplay.. If possible... best to all, til.....lat'r....GT..
