Here is the Stubby Pilot Screw Tool and you can see how I radiused the corners. Lots easier on the fingers. Also, it's easier if you loosen up the clamps that are shown in the lower picture and drop them down out of the way to allow more room for your fingers. Be careful when re-installing the clamps as they will need to go back over the little rubber boss before you tighten them down. As far as the base idle speed goes it really doesn't matter as you're syncing the carbs because you are always using cyl #3 as your baseline.
One thing that's nice is if the tool slips off it can only go back on one way so you don't lose count on the number of turns.
Set all the pilot screws to the same number of turns and then sync the carbs. If you're you're quick you can sync the carbs without the fan kicking in ....

