64-66 auto column

[65truckowner]

I have an original auto steering column in my 65 c10 that I am restoring. The shifter seemed to be froze up from sitting. I pulled the steering wheel and turn signal switch and sprayed some wd 40. I finally got it to work but now I cant get the collar to turn and lock back in position. I got it in position once but when I shifted back to park the collar turned and came off again Then I pinched my finger when I was working the shifter So before I set it on fire and called it a day I came in the house to cool off. Why cant I get the collar to turn and lock in position and stay there?