I have a small hole in the cowl now and have been making adjustments by shutting down the engine then restarting it and see If I can tell a diffrence. I can remove my cowl pretty easy so I will do that. The idle is not set too low, I think. After landing and roll out it sometimes dies but not always. I also will change the stock plug with a cm6 and see if that makes a diffrence. I will check the manual to see if it tells the idle RPM and set it. If I do all the above It should idle just fine. After about three gallons of pennzoil 32:1 this engine is really running good and strong. It's nice to be able to find the compression stroke when I go to fire it up.