The switch in the shooter lane is for the up/down trigger to shoot. My understanding is you'll find two switches at the end of the trough (these are the larger microswitches). I reckon these may need a tweak (or replacing)...These get hammered all the time so always a good idea to do this. You can just replace the switch and reuse the old blade if its not bent out of shape...
Re the balls coming out of the lock..Do you mean from the wire ramp on r/h/s? If so I remember reading a fix for this on RGP...I'll see if I can find it.
