Interesting info, Boss. Although, I'm having a hard time imagining where that lock nut goes where there isn't one already. Also wondering if a broken clutch pedal return spring could also be a contributing factor if the rod is, indeed, riding out of the piston socket.
Anyway, thanks for your time. Appreciate it.
P.S. Last time I was under the dash, I thought I wasn't going to be able to get out. Can't be an age thing.