Sig Somethin' Extra
With stock landing gear the best prop for a 46 2-stroke will be an 11.5x4 APC. I use an 11x4 cuz I haven't been able to find another 11.5x4. The 11x4 APC works well, too. The 12.25x3.75 would work better if the plane sat higher. I can't seem to get much thrust out of an 11x4 wood prop, so it's APC.
I have had no issues with the stock rudder or tailwheel. Flys great, but the Morris Knife for me is more fun. I installed the tail wires and it really stiffens up the soft balsa tail group.
It's a really easy plane to cover. The removable wings make it a piece of cake! Just don't leave any of the parts at home when you get ready to fly!