Garry Alpaca

We have been off-grid for our electricity for nearly 20 years, most recently using a Conversol V5 Super inverter. All worked well for about 3 years, until I decided to upgrade to parallel inverters, another inverter and parallel kits purchased and connected. Now we have a total of 10kVa (nearly mains), but the inverters won't charge the batteries form the generator, unless you turn them off and back on again. Just wondering if anyone has a parallel Conversol set up and working?