I have 2 Quattros for 50 amp power on an RV. Leg 1 goes into first Quattro AC In and Leg 2 goes into second Quattro AC1. When plugged into 50 amp service the batteries stay fully charged. But when plugged into 30 amp service, Leg 1 just directly passes through to Leg 1 on the RV breaker box. And since there is no Leg 2 input, the battery/inverter provide current for Leg 2 RV breaker box. The result is the RV uses far less than 30 amps input and the batteries are being drained by Leg2. Any solutions for this?