Why not use standard CMB 3rd channel needles and just mechanically lock them down? Would still give you the ability to manually adjust, and you know they would feed 1.01's.....
You can drill a small hole in the lower part of the outer barrel, tap it and put a setscrew in it ... a little red lock tite on the inner threads of the barrel... thread it together, lock the allen screw down.... it ain't moving..