Greetings all knowledgeable ones...

I have an O.S. .40LA on my Avistar and recently it's started to run backwards when I flip start it. If I slow it down to idle, sometimes it will reverse directions and go the right way. Other times it just gurgles and stops. This didn't use to happen until about a week ago. I now have over 50 flights on it with about four gallons of fuel.

When it decides to go the right way, it runs fine. I'm flip starting it counter-clockwise which is the direction it should run.

Is this something to be concerned about? One of the guys at my field said not to worry about it as it's fairly normal with two strokers. I guess I never expected a motor could do that so I'm curious what you folks think.

Thanks for the help!