Kev - It would definity make a difference if the cells were closer to the shaft. That just sounds wrong.
that would be cool if you don't have to use any extra weight. The placement of your Speedo and reciever would also help. I never really thought about that when I installed mine. I may try to reposition them. Doing some wrenching tonight.
Anyway. I understand gearing it that way with 58 mm tires.
I am not familiar to your rollout rating. I use the roll out guide that is like 1.00 rating. If you could tell me your formula I can compare it to mine. Using my rollout I was at a 1.04.