ORIGINAL: MLKISSEL

O.K., you guys seem to know how to get engines running well. I have two saito 82's. The first I have been running for two years on 30% heli fuel with a 14x4w prop; 3d stuff. Just bought a pattern plane, extra 300sp and a used saito 82. Could not get the second engine running right; kept getting detonation on acceleration and spinning off the prop no matter how rich I ran it. Finally sent it back to Horizion to have it checked out. Had bearings replaced and and some carb parts and glow plug replaced. Spun the prop off with 30% nitro on the first run. Have been running 15% ever since with no problems. I would like to run 30% due to the increased power. Is there a trick tuning with 30%? I can only find heli fuel with 30% nitro, I was told this just has more oil than 30% fuel for 4 stroke. Never been a problem before, any thoughts on this one? Once again, a Saito 82 running a APC 14X6 prop. Will turn 9300 or so at sea level with 15%. Thanks again for your thoughts.

Mark