After 2 unsuccessful dealer trips to fix my gen, I called an RV Mobile repair guy. He found the fuel pump on the gen was the problem. The rubber diaphragm inside the pump had a very small tear in it. He said he sees this a lot.
Which also explained the sporadic times of the gen working correctly.
Also when he was checking the fuel line to the coach tank he noticed the fuel line was wrapped up and down all around under the coach. another thing he said he sees a lot. RV Manufacturers put way TOO much line from coach fuel tank to gen. and gen fuel pump has to struggle to suck it, add the tear on pump and there you go.
He Shortened the fuel line, installed the new fuel pump and no problems since.
Bottom line, RV Mobile Repair knows way more than any dealership I have ever been to. I now have ALL my maintenance and repair work done by RV Mobile Repair. They come to you and within hours they can fix anything and correctly!