Okay my source told me to adjust to 3220 WOT in neutral.
I was able to get 3160 before it appeared the adjustment screw was no longer effective.
Subsequent testing shows us getting 3060 rpm @ WOT in gear, underway.
according to the manual for the propellor, I would be looking at as much as 450 rpm drop by pitching up.
so I think I have it as close as I can get.
will adjust max throttle to just under 3000 rpm and call 2400 rpm the max cruising speed.
Also will see if I can calibrate the tach to read correctly at 2400 rpm.
Next engine project (after we get the mast up) is to replace the leaky exhaust elbow.