1989 Alpha 1, trying to replace shift bellows but can not get plastic shift guide seperated from the shift wire that is inside of guide. I have the 2 square head set screws removed and can rotate the wire inside of guide and can see cable move back and forth every so slightly (maybe 1/16"), but can not wire to release from inside of guide where the set screws were tightened on it. Spayed with WD-40 and waited overnight, no improvement. Any ideas or suggestions? Am missing something as workshop manual shows cable just sliding out of guide. Any help greatly appreciated!