Strange Behavior OpenCPN Predictor Line

[pdxstriper]

Hi,
Referring to the screenshot, I have something weird here with my predictor line(s). My setup is the latest version of OpenCPN on a Windows 11 PC talking to a Vesper 8000. Note that the true direction of my vessel is represented by the line with the longer dashes. The vessel graphic and the shorter dashed line are the problem. As the vessel moves it appears to be crabbing through the water. This is what I see as well as what others see as they track my vessel.

This problem is driving me crazy. It appears to be some setting for an offset/correction of some sort. Does any one know of any setting in either OpenCPN, any OpenCPN plug-in, or the Vesper 8000 that canremedy this situation? Appreciate any ideas.
thanks,
Pete

[citlab]

I have the same
For me t's caused by heading rceived from Seatalk. My heading is off by up to 20 degrees.
I didn't bother about this until I included Seatalk to my openplotter.
It's time for me to swing the Seatalk compass.
-a