We just recently purchased a Keystone Outback 21rs. Dry weight of this camper is 4,500ish. GVWR of the camper is 6500. It is 22ft long closed up. We are currently towing it with a GMC Yukon that has a tow capacity of 7,600, GCVWR of 13,000, GVWR is 6,900 .We did take the camper to the CAT scales before our first journey. The whole rig weighed in at 12,300. Our car weighed in at 6,300. The Camper 5,700. Everything came in under what it should, but it is close. My first question: Is that to close?? We had a little problem on the drive. The camper wasn't swaying. But we were having a problem w