How do you all lean your engines? Has anyone had any experiences with LOP in their caruretored engine? I have an 0-320 that will run smoothly on the lean side of peak rpm. I have lately been leaing till peak rpm then just a little bit more. Then engine is still smooth and the way I uderstand it, it is saving fuel and exhuast valves. I am also always 100 rpm below 75% power for what ever altitude.