Thank you ,and here’s #1 grew up with class Cs and class As that my parents had just bought in May a shadow cruiser 239rbs is it common in travel trailers to have kitchen sink dump to black tank I searched some say bathroom sink has been done we camped Wednesday of last week had to pay for campground to pump out or break down hook up and drive to pump station on Saturday and we were full again this morning so after pumping and flushing tank came home put 2 gallons of dyed water in kitchen sink open grey to 5 gallon bucket nothing opened black and out Came the green water