I had a similar issue with pop bumpers firing and slam tilt resets when ever i would make the saucer because a the coil wire was just barely loose enough to touch the housing of the saucer. All i needed to do was tuck the coil wire back under the wrapper and everything was fine. Its a long shot but its something to consider. Check the coil wrappers for loose wires on all the solenoids that are firing, make sure nothing it touching something it shouldnt.

https://pinside.com/pinball/forum/topic/crazy-mata-hari-issue