On my 38DA, there is a GFCI behind the door to the salon. It is a new GFCI outlet, installed earlier this summer after we faced this same issue and thought it was a failing outlet. The issue is that we seem to lose power to this outlet under engine power. On shore power, all is good. We pull short power, power up the engines and it turns out no power there. This also means no power to the outlet under the helm where I plug in my supplemental iPad. If I try to test/reset the GFCI, no joy. Then I get back on shore power and the GFCI resets fine and all is good. Thoughts?