Use your voltmeter to check pin to pin voltages on your house wiring and your generator to look for differences.
If you have installed a surge protector some of them want to see neutral connected to ground. Take a regular 15A plug and jumper between the white wire pin and green wire pin and plug it in to one of the generator outlets. This will give you the connection the surge protector wants to see without having to modify anything.
"You cannot reason someone out of a position they have not been reasoned into"
Al, K5TAN and Missy, N4RGO
2002 Classic 30 Slideout
2001 Safari 25 RB Twin (Gone, but not forgotten)
2013 Dodge 2500 Laramie 4x4 Megacab Cummins
WBCCI 1322, TAC FL-39, AIR 82265