Thanks for your reply. We are in an area where we have been experiencing strange weather so haven't really dug back into this. Original exposure was in Arizona and we are now back in Idaho. Today we pulled the bottom skin to expose the tanks and a friend is coming tomorrow and we are going to try to find a solution. Northwood Mfg. says this is their system and they apparently see no reason to change. This is our 7th RV in the last 25 years, 5 have been new with 2 slightly used. This is the first that we have used as full timers and to say our disappointment level in what the market offers is not describable in this forum. We will see what we determine tomorrow as a possible fix. From what I have learned this rigging system is apparently common in the industry. Thanks again.