I have the Wagstaff with Moki 2.1 and I love the combinbation. I am running the Brisson muffler and Jtec engine mount. No pump or cline regulator or any of that other crap! Only mod is to drill out the fuel clunk and use the oversize fuel line. Prop is a Menz 'S' 20x10 and Powermaster 10% synthetic/castor blend. Static rpm is 6600 to 6700 leaned for flight. This has to be one of the best engines I have ever had. It is quiet ,smooth and very powerful and fuel consumption is surprisingly good.......way better than my Saito 180. Static rpm with this prop sounds low but the proof is in the pudding, flight performance is awesome with unlimited vertical. I tried the Mezjlik 20x10 static rpm went up to 7200 but the aircraft lost performance everywhere and noise level increased dramatically. Save your money.

jmw