I thought that the Wpc 95 games could use both a meter already fitted to the coin door interface pcb and a knocker, but having just looked at ipdb it seems that this 'Coin Meter Units' caper still applied. If you've still to sort this, look at pricing menu, 'A.3'. It may well have one of the Standard Pricing schemes and Door currently installed. Try selecting a 'Custom Door' to make the Meter Units adjustment, No. 21, visible, and set it to Off. If it remains out of sight, then select Custom Pricing too.