Samborees are a Good Sam Jamboree or Rally! dieselguy, you going to have to leave Kansas someday and get to know the rest of the camping world
! If you came up to the Central Plains Rally next this week we could have taught you this! LOL
While at The Rally in Louisville, KY last month there was a guy going around showing off his product. He would put it on a microfiber cloth and wipe the rubber trim around the rvs in the area and it took that mold or black stuff right off the rubber. It also cleaned the silicon areas that turn dark after you reseal something around the unit. I don't have it yet but I will be getting ahold of him and get some of this stuff!