So I have one nagging issue on this Old Chicago I've gotten back on it's feet.

When I start a game P1 will randomly be awarded 1000 - 6000 points. It's always the 1000's, it's always a random value, and it's only when the playfield is down. When it's propped or vertical, resets just fine and everything zeros.

It doesn't do this every time, but most times it does.

I've checked switches, but wondering if anyone has seen this happen and knows what it might be.

Thinking bonus unit switches?? For what it's worth all the steppers have been pulled apart and cleaned and operate as they should.

Thanks, it was in fact the lower rollover outlanes. Both sides gapped way too closely.