I found the 12.25X3.75 to be great with the OS46AX and should be superb with the 51 but it might send the RPM's to the moon though.

I am thinking Saito in the 72 or 91 sizes for my new one.

I have a ton of Dubro 1.5 and 1.25 inch arms and 1/8 robart hinges so getting gobs of throws should not be a problem. I will also peel back the covering on the wings, vertical and horizontal stabs and sand a 45 degree bevel into them.

I should have the plane next week and hopefully 2 weeks later it should be ready to fly.