Make sure you are on the latest release 7.0.63.7360. Go to the left side where the Channel buttons are and click on one of the channels. Click on an existing probe and the you will see at the bottom there is a an option to Ädd New"

Depends on the system, but yes under 600 volts on the Primary

Hi Steve, that is exactly what I was looking for, thanks so much. James

Is the any way to get useful data from a relative compression test on an uneven firing engine like a V Twin or V 4?

Thanks

I would do an in cylinder compression test or at least a leakdown test. Looks like you might have low compression on one cylinder(valve sealing problem - maybe a valve clearance issue?)