Rcpilet:
Start with a 16/6 for regular running, a 16/8 is a pretty fast prop for the 1.48. For break in, try a prop that will not load up the engine, say something in the 4" pitch. See if you can find an 18/4 Zinger, cut it down to a 15 or 16/4, then balance it. Plan on running at least a gallon of fuel through this engine before you can start thinking it's broken in. DO NOT GET THIS ENGINE HOT DURING BREAK IN!!!!!
Silversurfer