I can't find a booklet for this machine, I suspect it may not have one. Regardless, are there multiple drop targets scoring 5000 points during three ball play versus five ball play? I have seen other titles where the rule set changes with number of balls selected.

I keep mine on three ball, and it seems like an unlit drop target will score 5000 instead of 500 points - its not always the same drop target, so I think it indexes the same way as the lit drop targets. Thanks

Well, that's what I was afraid of. So, most likely my problem is with the relays in the relay bank. I have noticed how sensitive the rack is to twisting, and its hard to adjust the contacts properly when the final orientation is different from the rack's final resting place. I'll remove the field and work on them again.

Thanks to all for the help and comments.