I have been having a weird intermittent issue with the sanctum wall and sanctum kickout on my Shadow. It happens 50% of the time I am playing. Sometimes when I hit the sanctum the wall just drops. With the wall down I will hit the sanctum shot and it then kicks the ball out of the sanctum area instead of holding onto the ball and kicking a new one out of the shooter lane.
I have checked the switches behind the sanctum and they register fine in switch tests, replaced and rebuilt the sanctum wall switch. I have attached a video since I am sure I am not describing the problem as well as I could.
In the video the first ball lock acts fine, but then kicks the ball out from behind the sanctum. The 2nd time I hit the wall it drops immediately. At :19 you will see the wall drop when the ball strikes it, and again at :35. The multi-ball after the 3rd lock only put one ball into play.