I've been running an 11x6 on my Thunder Tiger 46. If I wanted to switch over to a three blade for a more scale look, what would be comparable? I have heard that you should drop one number on either the diameter or the pitch, but I'm not seeing any 10x6 three blades or 11x5 three blades. Would you go with a 10x5 or a 9x7 that Master Airscrew makes?