Well, I'm very happy so far with my Evo 10cc gen2 with the pumped carb. I'm running 20:1 Stihl Ultra HP synthetic oil and now a 11x6 prop.

I've run about 6 tanks of fuel through it, one tank on the ground, the rest in the air. I'm using a 6 ounce tank because that's what fits.

My OS46 did a good job in this plane but the Evo does a great job. The plane (a Phoenix Dolphin) is way faster and I love the sound. It sounds like a baby Harley...

My OS made a oily mess out of the plane. The Evo puts out a little black soot that is easily wiped off.

I had to go 1 click in on the high needle and a little less on the low side. I will be trying a 12x6 on it later when it has been broken in.

Did I mention the sound..... I love it!

Bob