What is the best way to adjust the light panel?
So that it is:
1. properly gapped away from the backglass (not too close "rubbing", not too far "rattling")
2. properly aligned so the displays look right through the backglass ("level")
There may be different answers for different eras of games, so please include that in your answer. I am looking specifically for early 80's solid state Williams at the moment.
thanks!
-mof