I am preparing ot replace the Jabsco head in my B36CC with a new Jabsco 'Twist and lock'. Should I replace the hoses when I replace the head? The boat is a 1999 and I have only owned for 1 year. The hoses look like they could be original but show no signs of deteriation or permeantation. They also passed the wet rag test in Peggie Halls book. What about removing the holding tank and using a high pressure cwasher to make sure that is also clean? I have a rather rotten odor in the head and if I am going to do this nasty job I want to make sure I do everything that might need servicing. It does not seem like the sort of job I want to repeat.