The issue with the ball and socket style pedals not staying put may not be due to the pedal itself. It may be due to a bent rod, or a non-stock position of the other end of the rod. Its all about geometry and motion. The section of the rod has a distinct curve to it so that it can pass through the hole in the toeboard freely. That curved section is not prone to bending, but the rest of it is, and sometimes they are bent to reach the non-stock connection at the carburetor or bellcrank.
(From Fox's description, he apparently got a hold of a bad new pedal.)
Carl
