Hi Balselly, Just out of interest, how did you go with this? I have exactly the same issue and I’m hoping to substitute the -21 switch.

The actuator on this switch in my game has been bent out of shape and cant be reused easily because there is too much play in the action of depresssing the actuator before the micro switch functions, meaning the actuator has to hang lower than intended. This is not a problem when the ball is moving through with momentum, however when the magic bus post is raised, the ball parks momentarily and the switch actuator (hanging low)has too much grip on the ball to allow it to decend down the ramp under its own weight.

Awesome thanks. FYI - The very next Junkyard I came across for a service call had the exact same issue.

Must be common!