I am getting ready to but 5th wheel hitch, on Amazon. Looking at Curt 16616 or 16516. They mention 16 roller and 5 roller, what does this mean? Does anyone have one of these? They are sliding hitches. Haven't used 5th wheel before. Have a 2004 GMC 2500hd SLT, with 6.5 foot bed. 29 foot Dutchman 5th wheel, weighs 7330 unloaded, with GVW 10560. Would appreciate any information or suggestions. Married male and will be camping alone, at times. Wife likes to camp, but in fall, I stay in Arkansas, Kansas, Missouri and Oklahoma. Can send to my email, if you want fisherjack36@yahoo.com. Thanks, Jack