Very true TOM, "honing" with the suggested method cannot improve any defect in the cylinder and only serves to manualy induce unnecessary wear and forsome with the mostzelous efforts, can completely ruin a cylinder. Looking more at the pictures, this engine appears to me to not have that much time on it for being two years old.

Christian, can you give us an idea of how much time is on the engine, or gallons of fuel used. I also noticed the spark plug, very coked up and rich looking. Maybe a read of TOM's carb tuning article would help as well.