Gracious, thanks for all the above suggestions.
Just had the cover off the AC a few days ago and blew/cleaned insides with air. Blades looked clean, although I did not take off the shroud. I will take it off and look again for crud.
The spark arrestor idea is something I will check.
I use the same 35 foot approved cord for 120ac house/pedestal current as for the generator and the AC and rest of the trailer works fine when everything is on, including frig and water heater.
Again, thanks so much for the suggestions and please, keep them coming if someone has experienced a similar condition with the Honda EU3000.
Thanks!
Mike