I my self wouldn't try running up a hill in 6th at 65 MPH.
I will go into 6th at 65 MPH on flat ground with no headwind.
I find the motor works better closer to 3000 rpms.
Mike
I live in Georgia. Our hills (at least south of Atlanta) are not very steep.
Probably less that 1/2 of 1 percent. Anyway with my stock cam I could accelerate up any of these hills. IN 6th gear, With a head wind. What I was saying is that the programming of the fuel pac is not up to par. NOT that there are any flies on the bike. AT 3500 my bike turns into a raging beast. I figured out what that bump in the seat was for. Not so the girl can see but so you don't slide off the back!! LOL!