We arrived in Englewood, Ks last week. Had no problems with the old rig pulling the Sierras or the Rockies. Now, mind you it had to really hump pulling some of the passes in Colorado. And that tow bar with our Toyota Matrix on the back really pulled hard. Had to put in a quart of oil in Tribune, Kansas. But that was about 1300 miles into the trip.
Had the crank for the escape hatch come loose and had to buy another one in Garden City, Kansas. Still haven't installed it yet.
We're in Dodge City for the week end at the daughters place. Will go back to Englewood this evening.
Glad to hear your having a good trip, if you keep going East, lets say Michigan, I know a place you can plug in for a while ;)
JerryT