Minor Troubleshooting Tip just in case this happens to anyone (I know this is simple but there are some that this will save time):
The left orbit ball lock was not triggering like it used to. Had been working before. Easy fix.
Scenario:
Progressing towards Trooper Multiball, when lock is lit, the pin physically traps the ball between the left and right two up posts, with the ball coming to rest against the "Up Post Left". This wasn't happening anymore. "Up Post Right" was firing too late. The machine recognized the lock, but didn't temporarily physically lock the ball.
Solution:
There is no opto to trigger "Up Post Right". It is triggered only when the Left Orbit Spinner switch is detected (When Lock is Lit). The spinner switch wasn't getting triggered until spin 2, because it seems the switch leaf has seen a lot of action. Simply bend the leaf up a bit towards the spinner target wire, to be sure it's triggered on the first spin.
LEFTORBITSPINNER (resized).jpg