What are the indicators that make you thing the electrical is surging? Are you reading power output from a monitoring system? Or voltage output?
The reason I ask is my 10k power output surged when I had a heat pump compressor go bad and it cycled on and off. The generator was simply responding to the "surging" load on the system.
Towr: 2007 Country Coach Allure 470 - 37 Sunset Bay Cummins 400 ISL, Coach #31563
Toad: 2016 F150 King Ranch - 3.5L EcoBoost 4x4 Supercrew (curb weight 4,775 lbs)
Toad: SOLD 2007 Jeep Grand Cherokee (yes, it has a Hemi) (curb weight 4,720 lbs)