<strong>Yahoo Message Number: 12680</strong>To all interested parties,<br/><br/>In my 04 Intrigue, just above the propane tank, there is a long, black cylinder (mounted crosswise to the coach) that is a sychronizing cylinder for four hydraulic jacks that move the front slide in and out. Just above that is a device called a back pressure valve that measures about 2"x3"x4" with about seven hoses...