Thank you for the answers and weights I can compare to. The as-built weight sticker isn't there that I can find. I assume it was on the cabinet door above the range hood which was removed to make way for the microwave.
Overall, this is a very nice camper and well built. I'll keep it, but I'm disappointed that the weight is so much more than the listed "wet" weight. I'm getting new tires tomorrow (Nitto Dura Grappler) which have a few hundred pounds of capacity more than my current Michelin AT2. That will get me enough capacity for my needs.
I'm coming from a 1971 Kit Camper, so this Summerwind is quite an upgrade!