I noticed the last couple of times we have used our 5th wheel, the water pipes rattle to beat the band..This last time it is real bad. The unit is still under warr. but I was just wondering if it is something I can do to make it quit. The rattlin seems to b behind the wall behind the shower stall..Oh duh I bout forgot to mention it only does it if the water pump is on..City water the pipes are okay..It doesn't matter what spicket is turned on the pipes start rattlin from the pump..Is this something the dealer will need to fix ? Any advise would b good. I have some other issues to address with the dealer while under warr.