I'm thinking the converter is in the rear just below the entertainment (TV) area. If that's the case, that is the worst place to install stuff. In fact, you should move the converter or better yet, disconnect it, and put a nicer one (magnum inverter/converter but $$$) or Progressive Dynamics one within 2-3 feet of the batteries.
In my camper before I installed a new converter to the front, I was losing .3 volts along the way due to resistance losses (wire gauge and length affect this). .3 volts was causing my batteries to charge at 14.0 volts and that is why it took FOREVER for them to charge while on generator.