2 videos of misbehavior "fixing itself":

Related issue.
In my case, the right door doesn't OPEN all the way.
Early ECLE, game has been fine for years until about a week ago.
Right castle door opens about halfway when doors open.
Door is not binding--I can manually easily swing it back to its fully open position & it will spring back to this halfway position (presumably resting on the backside of the door lock bracket?).

Game will misbehave for a period.
Then game "fixes itself" & is fine for a period.
Then not fine for a period.
That is, the misbehavior isn't randomly interspersed between good behavior. It stays good or stays bad for a period of many many cycles.

I pulled the castle PF:
- Tightened door shaft set screws (they were already tight) & added threadlocker.
- Found both motor mt. screws loose. Tightened & added threadlocker.
- Didn't see anything else amiss.

After reassembly, it tested OK for a while & then misbehaved again.

Propping up the PF & pulling down the castle door lock bracket w/ a screwdriver, it seems to have plenty of clearance for the door stop paddles, so I don't *think* the right door is rubbing on it during opening.

What do you think?

Thanks!
-Jason

Thanks tons, pinballinreno.

You seem to know this machine inside & out--thanks for all of your valuable forum posts.

I was hoping to not have to take the castle PF out again, but oh well--at least it will be a bit faster & easier the 2nd time around. :]

-Jason

Update:

I put in 2 new castle door motors.
Hardest part was transferring the capacitors from the old motors to the new; motor can = great heat sink.

I don't play often, so I didn't want to report resulting performance prematurely, but I've had zero door problems since the motor swap, so I consider it fixed. (And I've been focusing on beating up on those doors when I play.)

Thanks,
Jason

Weird.

I ordered 4X of PN: 23-005006-00 & got no caps.

No biggie. Mission accomplished.

Thanks,
Jason