Ideas to Shed Weight in Truck Camper

I guess the real question is what are you trying to accomplish? Axle weight or handling? Summer 2014 we took our 2009 830 to Alaska on a 2002 2500 ram, about 13,000 total miles. About 2 weeks before departure we loaded up and weighed. We went to 3 local recycling yards(all of which were state certified). They varied by 300 lbs. Next went to a cat scale which agreed with the middle scale. Point being, if weight is the concern be sure it is accurate. The results showed that we were about 200 lbs over on the rear tires. Those tires were rated at about 6800 lbs total. Obviously this was a concern. We were well under on front axle rating, over on gvwr, and over on rear axle rating. We were under on the Dana axle rating. The truck handled the load well but we were concerned. We decided to lower our weight, we removed some items and changed some items. We weighed everything. We decided not to take the front loaded bikes and moved the spare from underneath to the front. Our spare weighed 90 lbs. this meant not taking 2 spares, but oh well. The difference was greater than the 90 lbs fore and aft. We removed the mattress and took an air mattress. The mattress we had weighed about 50 lbs, the air mattress weighed about 10 lbs, so did the next 2 air mattresses. They were comfortable but none kept their proper air tension more than 3 days. We also had a lightweight egg grate topper which we kept. I know some love their air mattresses but I will not have another. We removed the shower door ( which I hated) and put it a curtain. As has been suggested we carried less water which saved us about 80 lbs. that all depends on where you are going and with how many folks. We made other changes but it is hard to lose weight??. Keep in mind any changes you make in handling add weight, some more, some less. At the end of the day we dropped about 300 lbs.. Sorry for the long post but we spent 2 weeks dealing with your exact question. Chris