Great score and welcome to the system 80 club 
Word of warning re pin all the connectors and do all the ground mods, it's only way to get them to run reliably.
Bottom playfield having trouble kicking ball up, do the mod with the pop bumper board kicks it up everytime.
I also have some aftermarket system 80 boards 4sale if needed.
what sort of price are you after for your boards, dont know if i need any yet as the machine does run, i am pretty sure i am missing a pop bumper driver board,
when turned on the HH fires up with the scores all working,
adds credit ok, press start button but ball does not kick out to the trough,
put ball in trough by hand and shoot ball with the shooter on to the playfield, flippers work most targets score aswell
cheers Ian
Ps where is my email about the HH scans 
pretty please.
Good signs there Ian.
Check the trough switch. Make sure the contact is clean and adjusted. Does the switch recognize a drained ball and advance to ball 2 ?
Check schematics. Check the coil - follow the wire to the driver board. Refit the connector.
Could just be a collapsed pin on the driver board connector, or the transistor that drives that coil.
Marvin system 80 guide could be a great read for you tonight, mate !
will have a fiddle over the weekend, i did clean the trough switch contacts, i think it did advance to ball 2 unsure.
cheers Ian
