Re: GFCI Problem
Gray, although your post is full of valuable information, you apparently don't understand the difference between line leakage and phase shift. There is no line leakage with capacitive phase shift. High capacitive start motors will cause GFCI to trip because the current flow is delayed by the capacitor.
The fact that the freezer has a warning not to install on a GFCI suggest that the design will cause false trips, at least at the time the unit was manufactured.
An older GFCI may be the problem, degradation of the electronic component in the GFCI may be a problem, moisture problems with the GFCI in a main panel is probably not the problem.
Personally I would not have a refrigerator or a freezer on a GFCI.
Be sure you live your life, because you are a long time dead.-Scottish Proverb