Roger, sir, and thank you for chiming in.

The problem is, I can't locate the pin (#10 on the diagram). Just can't find it, using mirrors, fingers and eyes. Not much room in there, of course. The pics of grinding out the pin suggest a round pin, and show it sticking out of the barrel of the "stalk" that is welded to the steering column. I don't find anything that resembles that. The parts that stick up from the shaft seem to be square, and aren't interested in depressing.

The photos and diagrams suggest that the pin is at about an 11 o'clock position on the shaft from the perspective of the steering column, with 12:00 being directly up. That means that the button can't be seen.

My next approach is to drop the steering column out to get more visibility. I hesitated to do that, as there are a lot of electrical connections going into that column. But I don't have many options left. Gotta get that lock out of the column to replace the switch.

It's kickin' my ass, of course. Revenge for all those B-17s, perhaps...

jb