hey--potential new owner--looking for some help---currently backpackers and looking to buy 5th wheel. Too much information about weights. Am I figuring this correctly? Typical 3/4 ton empty is 5800 #, add people gear and get 6500#---add pin weight of 2800# for a total of 9200 # for truck---if the rv is 14000 gross do I not subtract the pin weight to get the rv weight of 11,200# and then add that to the truck for total wt of 20,400#?? thanks--still looking