I have a 2011 Sabre Silhouette, 250RLUD. My problem, twice, has been at the aux. pump and shore water inlet to pump. They used the plastic braided hose and used the PEX crimp fittings. I now carry a couple of small hose clamps which I can clamp just in front of the crimp. It stops the leak and saves cutting off the crimp, especially if you are out camping, miles from hardware store when you discover the leak. I think before I start my camping season this year I will go through all the connections and hoses and replace where ever I can with proper connections and hoses.
2012 Sabre 250RLUD
2011 GMC 1500 Sierra
Max Tow, 6.2, 3.73
Rod, Debbe 1 spoiled Chihuahua and Becky the cat