John,

There is a WAY outside chance that this is an inverter settings issue. I'm not at the bus just now, so I'm relying on memory.... not the best resource under ideal conditions!

Anyway, there is a setting for my inverters that essentially keeps the inverters from momentarily going into a kind of idle state. There is a way to set up the inverters so that they will NOT invert under very light loading.... keeping the batteries from being used until a predetermined load is sensed and then they kick in to provide AC power. Mine are set (via dip switches on mine) to always provide power.

You might want to research this a bit and just double check the settings on your inverters to make sure they are still configured they way you want them.

As I said, in my opinion, it isn't likely that your issue is settings related.... but it won't hurt to check them just to be sure.

Good luck!!