Hello all - first post! A couple days ago I bought 1977 Jungle Queen that is in decent shape. It was $400 and I paid the guy an extra $20 to deliver it and take it to my basement

It has two behaviors that I need to figure out. First, it's on freeplay, but after 5 balls, the game keeps going. It counts ball 1, 2, 3, 4, 5 on the back glass, but just keeps rolling after ball 5. I found this thread:
pinside.com/pinball/forum/topic/gottlieb-duotron-em-problem-infinite-balls (removed http becaues n00bs can't post links it seems)
Sounds like the same issue - going to check that out.

The other issue it has is that after each ball, it sometimes picks the wrong player. I have mostly only played 1 player games, but sometimes it keeps score on player 3 or 4. So - I play Ball 1, score 20,000 in Player 1's score. Play ball 2, it scores another 10,000 in Player 1. Then, Player 3 might light up even though the backglass thinks its ball 3.

I am completely new to EMs and plan to start digging into repairing/checking relays. I was wondering if anyone had a tip on where I might check this problem.