A 14 x 4 would be considered overly-large for the .46 AX.  What RPM are you running?  The engine will give its best performance if you prop it to run 12,500 RPM to 13,000 RPM when leaned to just rich of peak RPM on the ground.

Any propeller that will allow the engine to turn in that RPM range and fly your airplane as you desire is the "correct" propeller.