At times the left ramp on my xmenle will reject a good shot, I believe the physical wire that the ball makes contact with is part of the problem with those rejected shots. I moved the switch to the spot just before the VUK in order to avoid any deflection yet still serve the same funtion, minus activating the switch on a weak shot and rolling back down. The new location is only a good thing imho.
The pics below are after the move. The first and last pic shows the old location, withe the screws put back to save them and fill the holes.
So far I am very happy with the "mod"