Good news! The inverter will be covered under warranty and they tell us that they can get the jackstand covered under the same deductible. It turns out the jack-stand was damaged so they replaced it when they fixed the line. The inverter will be in tomorrow and we will have both problems fixed.
After the inverter was ordered and work completed on the jacks, we drove back to set up camp, only to have the jacks lower and then immediately retract. We were told to bring the RV back the next morning.