@live2ski, here is a thread I started in 2012 about this type of problem. Ignore the FAE references since it was a red herring and read down to the chart tables that I had to adjust. This cured all of the assymetry times and speeds for all the bouys in the course for me. http://forum.ballofspray.com/discussion/6589/is-your-stargazer-going-wonky-technical-term hope it helps.