Hi All. I have a 2007 320 sundancer, I replaced the 4 duckbills which were in bad shape and while I was there also replaced the plunger. Worked well then the vacuum pump wouldn't shut off a few weeks later so I replaced the pressure switch. Now the vac pump runs every 2-3 minutes for maybe 5 seconds. I will check the seal at the toilet ball valve but I suspect there is some toilet paper in the duckbills. How do I flush that thoroughly without taking it apart again and cleaning it? Also, my hose that comes from the vacuflush to the toilet is (on the part that I can see until it goes through a compartment) is cracking but is that hose one piece all the way u to where it connects to the toilet itself? Has anyone ever replaced that and how difficult is that and any tips? thank you