Thanks for the replies.
Score multiplier - yea, I just gave up on it as well about a year ago and left it, actually chocked it up as that is the way it is (even though it doesn't seem right). But since digging into the game again to solve this latest problem I thought I would ask about that as well.
Unfortunately the reset coil on the upper bank on mine isn't marked, so I not even sure where to start looking on the drawing.
But after going over the schematic the last few hours, I think I may have tracked something down with regards to the scoring issue. Have to look it over when I get home if I have some time tonight. I am thinking there is an issue with the motor 1A contact at H4 on the schematic.
I also noticed that there seems to be a couple of mistakes in the drawing:
@ position 19G, the score motor diagram seems wrong - none of the switches list should make any difference if they close. IMHO the 'wire' coming off the motor 1C switch should be connect on the bottom vs. the top.
@ position 18G, on the '3-5 ball adjust' section it should be 5 at the top and 3 on the bottom.