I have cleaned a rubber roof and did not rinse sides of trailer quick enough. Cleaner left white streak marks on all sides. also cleaned the roof in hot weather. I have used Awesome, Simply Green, , Mr Clean scrubber, WD40, rubbing compound, black streak remover, lots of Elbow Grease, RV wash and Wax all to no avail. Streaks appear to be removed when first washed/dried but appear to come back. Less noticeable but still there. Manufacturer has wrong contact number on product and web site difficult to negotiate. Any help would be greatly appreciated.