Gordon..I have the same problem...sometimes! Lazydays tech told me that they had replaced the pump in a number of coaches...but now Lippert wanted a video of the "drop"... Of course my coach behaved. Lippert was at the irv2 rally in myrtle beach last month...field rep came to my coach...yup you guessed it...smooth and easy decline.... Another tech told me a flapper valve, that moves back and forth sticks till the pressure build up and forces it to allow fluid to flow in reverse...thus the drop...of course I also have the Lippert slide rattle too... But that's another story...
2016 Entegra Anthem 44B
08 Jeep Wrangler,14 Buick Enclave
Bailey our Boston Terrier