Running two 2000 watt generators in eco mode with AC on

I am pretty sure my AC is 11000 BTU. Like I said I can run the AC off just the one Yamaha but it's loud and at its limit, and doesn't do it reliably. This is what has gotten me thinking about running two in parallel.

I would love to try it out first, but I am having a difficult time finding a second yamaha with a parallel cable. If any of you are in the southern Arizona Yuma or even San Diego area I will pay you for your time in cash or beer if you let me try hooking up my yamaha parallel.