If I perform the following steps, the charge pump pin number in the Mach output configuration changes from Pin 1 to Pin 17. This is with XP Pro and Mach 4.2.0.2763 and PMDX-411 v0.31.147
1. Start with charge pump assigned to pin 1 and enable Mach.
2. Enter plug in configuration and change something - like spindle assertion level.
3. Exit configuration screen.
4. Charge pump pin has now changed to pin 17 in the Mach configuration screen
I don't know if this is a Mach or a plug-in issue.