I assume the as built weight sticker has been removed? Summerwind was pretty good at giving real weights. The brochure weights, dry or wet, still reflect camper with NO options. Elec jacks, AirC, awnings, microwave, generator etc. Though 1000# seems high on 811. That would include tiedowns etc (diesel fuel @~7# per gal)what you load with camper. Bottom line though is scale weights.
We seriously were looking at a S/W 911S-really nice camper, but the real optioned out weight numbers put it out of our range. But it was an expected 3500# plus gear, Your 811 weights kinda puzzling. Irregardless if thats what it weighs...its addressing