Just started on a Williams Star Pool a few nights ago. This is my second pinball restore....thought I figured a lot of this out on the first one!!!

When the ball drains it does not advance to ball number 2. Sporadically, very sporadically, it will advance a couple times through a game and then it stops again. I've cleaned the ball count unit, the ball index relay is sticking after points are scored, and I have gone through the outhole relay multiple times. Oh, I've also cleaned the points on the score motor that according to the schematic pulses the ball count unit. Any ideas?

Is there anyway to energize the coil on the ball count unit to ensure the coil is okay?

Still not advancing the ball count. Still on ball 1. I have checked and cleaned all switches yet again.....ball index relay, score motor switch that pulses the ball count unit, outhole relay....

Something has to be missing here. Last night it did work a couple times.....however nothing since.
I have not spent this much time on any other issue I've had....

Yes, I took the wheel off the player unit, cleaned, lubed with Teflon and put it back together.