ORIGINAL: clayton_crowder
by the way i changed from the 3 prop propeller to the 2 bladder during the useing the 4 cycle fuel due to some rough landings and all i had was 2 blade props left.
What two-blade prop did you install? The Evolution .61 recommends 11x7 or 12x6.
If the "four stroke" fuel you are using only has 16% oil, it is marginal for use in your two stroke engine. Omega and Cool Power regular 'aero blend' fuels have 17% oil; Powermaster has 18%. Be sure you run rich if you only have 16% oil.