Moitessier Pitch, Heel, Compass, Temp data Freezes on Cold Restart

[jamieFL]

I have Pi 4, Moitessier HAT with MCS.  I've noticed that when I boot my OP from a cold start, I usually, and by usually I mean as often as I can remember, I have to reboot to get pitch, heel, compass, temp, and pressure data to show up in OpenCPN.

Any ideas why this happens?  Is this common? Is there a setting that I can change besides 'Delay' in settings, which i currently have set to 3 seconds, remedy this?