<<I’m not sure it has anything to do with the 10 point switches though. Touching any of them makes it lock on >>
So doesn't sound like the problem is a stuck playfield 10 point switch.
When you push the reel's solenoid plunger in fully with the screwdriver, visually is that EOS switch in your second picture opening up or not? Push only the plunger itself, NOT the metal armature that it is pulling down with it.
If that switch is not opening with a visual gap, the switch just needs a little adjustment.