p.j

Hi all. I have been flying and totally enjoying my Saito engines for about four years now ( .91S ,.72 , 100 ). The .91 is my oldest and by far has the most time on it. The other evening I was looking at a number of posts mostly to do with setting valve clearance and after decided to do a check on my engines which are idle for the long Ontario winter. After adjusting the valves on the .91 I had a look through the glow hole with a light and noticed a bit of scoring on the portion of the wall that I could see.I am wondering if a bit of scoring is normal after about 200 flights or should the walls still be like new? The engine is a wonderful performer that has never given me trouble. I have been using 15% Helli CoolPower and a tack to set top rpm.

Thanks P.J