Thanks for the video! It's a joy to see your setup, but I think that's also the first time I've heard the voice of one of my users outside of Flight Sim Expo.
Which event are you using for the generators? I think it's just a matter of it repeating the command continuously, as I've seen this with other aircraft in the past. I'm sorry that I'm not an expert on the hardware binding software, though. Are you sending a "Toggle" command, rather than a "set" command?
The inverter should be very easy if you are already working with other L:Vars. The inverter switch is...
(L:var_InverterSwitch, number)
0 = Main
1 = Off
2 = Standby
All other L:Vars, native events, inputs, and outputs are in the manual, if you haven't found them already. Good luck and let me know if I can do anything else to help!