15 in the handheld where it says "Distrib base deg"
When I setup my ignition on the Fitech, I do the same thing each time. I put 15 degrees into ALL fields. I then get the engine fired and twist the distributor until it reads 15 degrees on the balancer. Since the timing fluctuates at idle, I typically have the wife hold the revs up a bit or I'll put a few turns into the idle screw to get it out of 'idle' mode. With everything set to 15 deg I don't have to worry about what the actual RPM is when I set the timing..
Once dialed in I set my idle timing to 18 and other values accordingly.
This has worked each time for me and when I checked the phasing with the drilled cap, the rotor tip didn't stray far enough from the terminal to cause me any issues. I don't have an adjustable rotor.
