My Stern Stars has had a persistent problem with intermittent tilts from the spinner switches. It is mainly the left one, and it happens most but not all of the time, when the ball goes thru and spins it, the machine will tilt - not immediately, but towards the end of the spinning. I have all brand new boards in the machine, and I just replaced the spin switch diode to see if it would help, but it doesn't. Would replacing the spinner switch make any difference? Any ideas appreciated.