Quoted from Aper-caper:

Hi MarkG,
I'd be very interested in participating in a future session as an Owner with a specific problem.
I've got a 1976 Gottlieb Surf Champ with a challenging scoring problem. I'm a relative newbie, but I've had some significant expert help and we've not been able to resolve the issue, so I'd really appreciate working with your team of experts.
The specific issue concerns the machine scoring excess points (e.g. 600 pts or 700 pts) on 500 point targets (all players). The issue happens around 50% of the time a 500 pt. target is hit (e.g. repeating a target might generate 600, 600, 500, 700, 500, 500, etc.).
We've been studying the schematic, checking the relevant relays, jumping some circuits, etc. to no avail.
I've got Jit.si capability, the machine in an open, well lit space, with all necessary tools and testing equipment present.
Please keep me posted for any future sessions that you think I'd be a good candidate for. Thanks!