I had crazy stuff until I got the boards from GLM. Now it plays well but once in a while I get a trough error also but usually it's just one, not multiple switch errors. . Not sure why and I haven't had it in awhile. It annoys me but I can't figure it out. I wrote GLM and he told me it's often the wires on the board. He told me to put it in switch test and move the wires to see if it caused the switch to trip.

Crazy, never ending multiball on mine until I got the GLM boards. Cleared that up but I ovcasionalky get trough errors. Not sure why. I don't have the dead world mod because of this. I emailed GLM and they said that sometimes it's the connector to the new opto boards. I'd wiggle the connector in switch mode and sometimes it would flicker. I haven't replaced the connector yet to seeif this permantly fixes it.