Don't trust your yellow load of water sticker, because it could be a load of BS
.......When they sent the first Roo that we rejected, a 2016 built early december of 15 the yellow water capacity sticker said a full load of water weighed 249 lbs. By my math thats 29.85 gallons. The only small problem is the tank measured 28X54X6 which holds 39 gallons and if you added the 6 gallons in the heater you're looking at 375 lbs.
Crawl under and measure your tank.
Our new 2017 Roo has the same 28X54X6 tank and 6 gallon water heater yet the water stickers says 307 lbs. And you can get that tank completely full
Someone in Indiana needs to go back to math class