RE: Alpha40 special prop
The Evolution prop should work OK on the TT .46 Pro. I just ran in an Evolution .46 on an Alpha 40 using the stock 3-bladed training prop for a student and we tached it at 11,660 RPM. You'll get around 13,300 RPM or slightly better from the same engine with an 11 X 5 2-blade on it.
There is no need to run the engine rich - just peak it and richen it 400 RPM and you'll be set.
Hogflyer