I only travel with 10 gals of water in the tank. I carry 30 more in the trucks bed where I have a solid floor to support the weight.
IMO, you might have another water tank issue over time if you continually travel with full tanks.
I have seen dealers install metal crossmember straps with foam to cushion the 'metal on plastic' wear.
one of our members did a nice job on this:
water tank support pics others have had this problem:
http://www.rv.net/forum/index.cfm/fuseaction/thread/tid/28494869/gotomsg/28494882.cfmhttp://www.jaycoowners.com/forums/f7/fresh-water-tank-strapping-broken-6916.html
