Hi Twerre
Welcome to PinSide and the joys of an EM!

HP is one of my favorites. I am not a reliable diagnostician by any means but can offer photos/vid if a comparison ever would assist.
The folk who chime in here have aided me immensely.

Pinsider MarkG periodically does an online problem solving workshop which TimMe and other talented folk participate in -- wicked helpful and a blast to just be a lurker : https://pinside.com/pinball/forum/topic/an-em-pinball-online-repair-clinic

So for your second game: a speedy Williams or drop-target Gottlieb?

Cheers

Tom