All ActivityMost RecentMost LikesSolutionsRe: Converting to dual FWTIt's to late for that. Already have to rebuild some frame work. Decided rebuildinfnwas cheaper than two tanks.Converting to dual FWTI have the dreaded tank sag. My last rv, a 2006 21 AK attitude had dual tanks without any sag. I am contiplating installing dual 50 gallon FWTs in hopes of decreasing the sag. Has anyone ever thought about this as a way of handling the sag issues. The gram for the old single tank snapped and since I have to rebuild, I am considering a new set up. Less weight men's less sag. The old tank dimensions were roughly 58x59x11. I think that's to much surface area.