We have a 2010 Georgetown 378, same problem with the orange hoses as stated above. Our rig was purchased 12/2009, out of warrany. However, after contacting FR, I was told to take it to a dealer for service and hose replacement. Just finished the install of new hoses today. Had the tech cut open a few of the blisters and he claims it was hydraulic fluid in the blister. John Armstrong at FR has been fantastic about helping with the few problems that we have experienced, especially this hydraulic hose blistering problem. BTW, the hoses were ordered from Lippert, but who they get them from is a ?. The tech who did the change out stated that he believed the new orange hoses were of a much higher quality than hose he removed.