Having trouble finding a choke cable with locking feature locally. Very confusing list of part numbers for different years - exactly when does 'Late Models' apply? I put out feelers for a used one locally, then decided to look at the old one. Silver soldered the knob where the cable end came off, then couldnt get the end of the inner to pass right through - something catching the end, despite having ground it to a slightly rounded point. While I was trying get past that I broke the end off the outer. Damn and blast. removed the whole cable - hidden nut is 3/4" ,undone with a 3/4 tube spanner cut in half, and a slot cut in it. After calming down, managed to reassemble the end ~1/8"-3/16" shorter - worth a try. And I could get the cable all the way through - bonus. It took some fettling to get the soldered area of the knob stem to get within 1/8" of fully home, but figured that would do as the gap would be pretty much invisible. As I needed to remove the screen valance to make the cable outlet point easier to see, and to fix the heater vent lever issue, off it came. Laced the cable through from inside, and managed to get it to reach its fixing point on the carb without major issues. And it starts and behaves! Win No1. loosened my nut fix on the heater vent control shaft, levered the arm off the shaft a touch, pushed the lever to its stop pin, pulled the inner lever to the bottom and checked I had high speed fan working, locked the nut on the shaft up. Win No2! Now all i have left is tightening the hidden nut, and refitting the speaker and grille. Very good day's work if I do say so myself.