Are you using Virtual Gibbs for plasma cutting? Nothing like a little overkill (:-)
Take a look at using SheetCAM. It's easy to learn and has plasma posts that do things in the right order and has plasma specific parameters like Pierce Height, pierce delay, lead-ins (4 types). lead-outs and provisions for using a touch-n-go surface sensor.
Depending on the controller you have SheetCAM may already have a post that will work.
Get more info at www.SheetCAM.com