I ordered a drill jig from TroyBuilt for my DZD 40. I was too lazy and didn't take the spinner washer off the airplane to check and the jig had imprinted on it DZD 40-160 6 hole. YES, I used a drill press.
As you can see, all the holes are half a hole off on this $50 prop.
At first I though of filling the holes with epoxy and useing the engine prop six hole washer and drill new holes between. Geese!
OR, take my Drimel Tool and "hog" out half a hole to make fit.
I have the feeling what you guys are going to tell me.
Engine RPM is 7400 with 20-8 prop.
Jim