JohnG.

I'm guessing you cut a slot in the servo tray for the switch to move back and forth within?? Is it possible the switch itself is moving closer to the off side of that cut out, thusly stopping the switch from pulling off all the way because it's hitting the plywood, making it seem locked up? Also, mounting a switch on thin foam to isolate from vibe is perfectly fine.

Marcus is right about our environment. It can be tough on equipment. And certainly never use a crashed switch, or battery pack. Unless you have the knowledge to take it all apart and put all the solder joints under the scope. I throw the switch and battery in the trash after a crash..

JPA001 ... that's all I use.

RB