Radar Alignment Issue

[osprey_II]

I'm using OpenCpn 5.10 and Radar Pi 5.5.4-beta to display my Halo 20+. The upgrade to 5.5.4 seem to have solved the crashed I experienced earlier after reading a recent post on that issue.

However I do have an issue with the PPI radar image not aligned with the direction the boat is heading. I'm operating with heading up stabilized mode. It appears to be off by at least 10 degrees if not more. When I installed the radar no heading alignment offset was necessary as both the MFD (Lowrance HDS Carbon) PPI display and the radar chart overlay was in visual alignment.

OpenCpn is connected to SeaTalkng network using a WiFi gateway. My autopilot EV-100 and MFD is providing heading and GPS data to the network.

I find it strange that the the MFD radar display is aligned but not the opencpn radar display.

Looking for suggestions.