My experience is that the sticker is never the same or close to the brochure weight. The brochure weight is generally a stripped model with no options.
If your sticker reflects the brochure weight I'd suspect the sticker is inaccurate.
If you are that certain that your cargo is not excessive than the sticker has to be wrong otherwise your cargo is excessive. There is no other scenario.
Nevertheless unless you simply weighed your rig wrong, your rig is overloaded.
You need to establish a base weight. Maybe Grand Design can shed some light.
But what can they tell you that you don't already know? The sticker is bogus? The scale is wrong? Assuming the scale is correct the only significant thing GD can say is "New axles are on the way!"
At this point I would rely on the actual scale numbers, unless you get new axles you need to unload something. Stickers and brochures are are no substitute for the scale.
