Here is a cheap fix for the back aches and it works well:
Back-A-Line I bought the Corbin with the back rest before the major price increase last year. In my experience, the Corbin has eliminated the back pain so I don't use the Back-A-Line anymore, but the seat is so hard, the butt burn is still there. After 6000 miles on the seat it is just starting to break in.
Others say the seat break in period is far less, but not in my case.
One other issue, the Corbin will drop you down and forward a few inches so if you have long legs, you're gonna wish those forward controls were a little farther forward...
I added Bella Corse bars with hiway pegs mounted low to compenste for that one......
