Bax,

I have a OS 160 FX in a 1.20 sized Edge. I think I have enough air inlet and exit to keep it cool, but it keeps overheating. I'm running Powermaster YS/Saito 20/20 in it. Someone said it could be the higher nitro content, but I didn't think that a switch from 15% nitro to 20% would make that much of a difference. Plus, I have 2% more oil and than a 15% fuel. I thought about getting some Cool Power 15% but I wanted your opinion first. The attached pictures are of the engine in the cowl and the various cut outs for cooling. Do you think I just need to add some baffling or should I try lower nitro fuel?