I am just getting into my second gallon of gas in my DL50. I am using non oxygenated gas, with Pennzol Air Cooled oil at 32:1, NGK CM-6, and Vess 22A prop.
My engine has pretty good throttle response. It probably lags less than 1/2 second when the throttle is opened quickly. When I chop the throttle, it will either kill or go to a lower idle speed than it would normally idle at. If I close the throttle slower the engine will go back to the normal idle rate. What causes this and how can I tune it out?
The high end seems to be good.

Greg