I have a 2006 titan without tow package, truck came with factory receiver hitch and trailer plug harness. I pull a Trail cruiser 26ft light weight camper, dry weight3,500 lbs. I was told by my dealer that my truck has 2.9 axle ratio. I need to change to 3.3 axle ratio . Can anybody help with this info. I was told by dealer that I cannot purchase the gear set . Truck turns 2,[email protected] in 4th gear automatic. Problem going up hills ,looses 15mph and down shifts to 3rd. My 2002 Pathfinder with 3.5 v-6 only lost 5mph pulling same trailer but was turning 3,400rpms at 68mph in 3rd gear with 4speed auto. Very dissapointed in Titan considering it has a 7,000 towing capacity verses 5,000 on my Pathfinder.