Hi Kevin
here is how i use my Medium IVO and find it efectif , tell me if u use it similar to this,,,
Takeoff - fine prop to maximum
Level - trottle back to 5200 rpm
- coarse prop to 5000 rpm and 31 in./Hg
landing - fine prop to max
the max fine position is when i see my voltmeter droping more voltage meaning end of travel on motor screw , this point is 15 degree at 9 inch on blade ,i measured it .
and for my 5000 rpm and 31 in/Hg it s 18 degree at 9 inches on blade .
Regards