Mike,
Geez....I don't think I used it. May be worth a call to them. They are in Kenilworth, NJ. If you contact them let me know.
http://www.pro-50.com/
UPDATE: I just went into the garage and checked the old box. My old shifter still has that short piece of tubing on it so I guess I didn't use it after all. Shifts fine.
Roscoe