Alyce,
Connecting the dots from the selector dial to the rear posts are any of the linkages, levers, fingers, etc physically preventing the collar from moving up and down the rear post? Sounds like your getting there and only the last bit of gum or blocked mechanical part to go. The 401 is worth the trouble.
Jon
Edit--Good Going
Last edited by jlhmnj; 03-26-2013 at 02:22 PM.