John -
It sounds like you had the same experience I did 2 years ago when I picked up my Freightliner. After a few weekends of practice I was able to shift 1/2 way decently. After a year of use (about 7,000 miles of which was highway so no practice there) I float all shifts, down shift great with the help of this devise
www.gearmaster.com (this will make learning to shift a non-sycro trannie a snap) and have been on some brutal inclines to start from. The key is to put some seat time in.
Bill
2003 28' Show Hauler Motorhome on a 1995 FL 120
www.showhauler.com