My target alpha is subtracting 2 credits at random. The credit stepper is clean steps up and down normal. Checked and cleaned all switches in circuit starting with replay button and working down to start relay. It generally seems better at higher credits on the wheel like over 10 it usually just deducts 1 credit ( i thought maybe clock spring, but it seems fine) When it deducts 2 credits it is super fast and I cant mimic it by hand. Sometimes it is fine for several games then comes back. Some weird coil stop bounce thing maybe.
Thanks