Need some help. Why Star Trek next Generation just keep spitting balls out.

I changed the trough opto boards, everything tests correctly in switch edge test. The correct number of balls is in the machine (6).

As soon as I start it up, it just starts kicking out balls. It will start a game if I hit the start button in the window where all six balls are in the trough and play normally until the game is over. It will even kick out balls when I'm entering my initials.
Any help would be appreciated. Thanks!

I did & they all test fine.

I'll look at some of the other stuff & let you know. Thanks for the suggestions. Probably going to start with going one by 1 and cleaning all the optos

thanks guys, I'll try to get deeper into it tomorrow

Just an update. Turns out it was fuse F 103. Feel stupid that I didn't check the fuses first but I figured it might help someone down the line..