Ryan,

Typically on a new DA50 you want a 22X8 like a NX, Mezjlik or PT model props or a Vess 22B or even the 22A. An MSC will not work as it is a wide blade and loads the engine too much.

During breakin you want the engine to burble a bit on the low end. At 5 gallons on both of mine I turned a 22x8 PT model CF prop at 7150 and at 7 galoons I could turn that same prop at 7300. I'm at 15 gallons and can turn a PT model 23x8 at 6800 and still be at 180 degrees.

Do you know what temps and rpm numbers you are at and the color of the plug.