So I got my 1977 Williams Wildcard mostly up and running. However the problem is the relay bank that's reset by the giant 115v solenoid is resetting inconstantly. When the machine is start up it resets properly. However when the 8 cards are sunk the bank is supposed to reset completely. The solenoid fires, but some of the relays don't reset. I've noticed blue sparks on the relays that don't reset, but I can't find anything in the schematics that might provide a hint as to how that would relate.
However, if I put the machine in the service position and trip all the relays, the bank resets perfectly every time. When I put it on the prop bar or back down into it's normal position the inconstant reset behavior comes back.
I had a similar issue with my gottlieb which I fixed by moving the reset coil further away, but I can't see any way to do this on a Williams. The blue sparks are also confusing me.
If anyone needs pictures I'll do my best to oblige.