The fan in our Coleman Mach 3 Plus A/C unit is scrapping on something at low speeds. It stops on high speeds, so I guess it's raising or moving somehow at the higher speeds. Anyone solved this kind of problem, please advise of your solution.

Thanks for information. I've done some Google Earthing and MapQuesting, and have found a Flying J and a T/A just off of I-80 in Lake Point that's right on our way back to NV and won't take us out of our way. There's a great Internet site that lists dump stations all over the country, but like you, I guess I can't insert a URL, but just Google RV Dump Sites and it will come up. It lists whether they're free or not, too.