check the hose itself. if it has a dull finish, and HWH02 printed on it, hwh wants to know about it. they had some hose made by st gobains in france, that was a problem. the new hose is made by parker, and has a shiny finish. in either case, the hose can be replaced. get the AP number off the hose. its located on the end of the hose, printed on the white tab behind the fitting. if you replace the hose yourself, download a service manual, and be sure to read the section on re syncronizing the cylinders. its very important.
putting new ends on a hose can be done, just get an explanation of the warranty from the local company. my bet is that there will be none, since it almost never works.
if its a single cylinder, such as a bed slide, it does not have to be resynchronized. if its one of the hoses that run to the pump from a connection by the a/c, all you have to do is run the room in and out several times. email me at firstname.lastname@example.org
if you need some help. i do work for hwh.