Mine don't sit near that low either. Still haven't got around to weighing it, but only carry 1/4 tank of water for toilet flushing, gray tank empty, black tank varies by trip. We're more loaded now than we've ever been since we're on a two week venture in east Texas, but if I had to guess I still got room to spare. Bags are at 40 psi port, 60 starboard to help level it out.
John and Rebecca Dickson
Emma-7 / Little John-5 / Iva-1
Full Timing Again, Rev B
2013 Ford F-350 Lariat CC LB PSD
2015 SOB TT - With OC's Awning Poles (#8)
At least in Heaven, RVs will be perfect, and I won't have to keep fixing them.