Mine has the same problem. I figured out how the logic worked and researched rgp and decided I must need a new motor, but I never did get around to replacing it. First I'm going to take it out and drill out the rivets to see if it's something I can fix, one of these days...

Well, drilling out the non-existent rivets didn't go so well , but I did futz with it some more to refresh my memory.

I discovered the island lock solenoid's locking pin had come unscrewed partway from the plunger, causing the pin to not retract as far as it should. I thought, that had to be it! But once I tightened it back up, it started resetting more often than ever!

Turns out the switch was now reliably not deactivating when the solenoid was not energized, telling the game that the pin was down when it in fact was not. So guess what happens when the island is locked but the game thinks it isn't? Yup, it tries to turn the island to seek the next locking position, but it can't turn, so the motor overloads and we get a reset!

A simple tweak of the switch blade and it hasn't reset since! Booyah!

OMG, I proceeded to clean the ramp mech to make it stop sticking occasionally, and the damn resets started again! Argh! I hope that locking pin switch just needs a little more tweaking!

Good for you! Sadly, a new motor didn't solve my problem. I note the reset happens, oddly enough, when the motor DE-energizes! Now I'm thinking I should have started with the standard WPC reset troubleshooting checklist... Which I will do when I get around to it. I will report back eventually...