Nice to see a simple fix for the spindle, Tom!

Dunno about the orange box. Any orange box owners want to comment pros and cons, it's something that gets asked about by prospective buyers and some feedback would be handy.

Another question. Sometimes I start everything up (start the machine, the laptop, Mach3, reset, ref all axes, a bit of jogging etc to find a workspace zero) and then start a job (usually start with a tool change and Z height zero). But when it gets to start the spindle, all I hear is a whine from the spindle with no movement and the message "PWM bumped to minimum" comes up.

Nothing short of quitting and restarting Mach3 seems to fix this. Anyone else experienced it? Am I inadvertently hitting some random shortcut key for "fvrk it all up"?