zipp,
Turning off the generator with a load shouldn't matter. That just removes power from the load. I've done it many times.
Not sure what "the Generator runs crappy, like it has no guts" is describing.
Does it run without a load?
Does it run without a load and produce power?
Does it run with a load but not supply power?
If it's just running rough, I'd look at the carb or ignition first. I've also heard several on the forum talk about carbon build up in the cylinder with gas burners.
Good luck.