Aloha RCU Flyers,

I have a persistent overheating problem with an OS 65 on my 61 size Escapade. It runs fine for a few minutes and sometimes even a few flights then the engine really loses power. After landing I noticed the engine was very hot to the touch and I got a reading of 230 degrees F on the temp gun (after throttling back and idling for half a minute or so). I have tried running the mixture as rich as I possibly can and still fly the aircraft but I have the same problem. I do have a cowl on it but I cut off the top to fit the motor and let it breathe. I have attached some pictures of the cowl to get some feedback. I run Cool Power 15 % Nitro fuel. I am out of ideas at this point and need help.