Hello Rob,
You need to play with the settings and times. If the "blip" is too short of a pulse width then the governor shuts down and then executes a restart, which is what you have. (I'll bet!)
Modify the script to go to maybe 1250 microseconds for 1/2 second, then back to the roughly 1300 that yields something like 9,000 RPM for another half second, then 1250 for another half then back to 1300 foir 5 seconds and you'll be much happier.
I have to know, how did you get a hold of one?
Dean