Just polished the trigger bar and bottom of the sear cage on my SP-01 Tactical. I wrapped each around a square eraser with 600 grit, then 800 grit, Flitz and dremel polishing wheel. Did it all while the slave pin held the sear cage assembly together and just held any lever out of the way from the opposite side. I was having some trouble with the trigger pin until I bent the short leg out more so it catches in the trigger well easier then used a punch to align the pin, spring, to the holes as zfields did. Also changed the hammer spring from 11lbs to 8.5lbs. Now to get either CGW's or CZ Custom's race hammer. Smoothened the trigger pull quite a bit, but my Shadow Target still feels slicker probably due to the race hammer and no firing pin block.