Top work Dave - those bumper caps look sweet You were lucky to find a game in good condition, BK got hammered back in the day.  I still remember the 20c lined up on top at popular locations as people were happy to wait to play.

You have done the right thing by going through the electrics and connectors, whether they appeared to be OK or not, as this is the key to trouble free operation on these old girls.  Particularly the 40 pin connector, what was Williams thinking

cheers
Ian