My R6 eats me. True.
Ive been on a few long rides now (70-150miles each) and afterwards my upper thighs and arms are just killing me. Ive adjusted my front fork preload all the way soft, and the rear preload to 3 (goes up to 10 as the stiffest) and it seemed to help alot. I have a service manual that covers all the adjustments and set everything else just a little softer than standard. I ride with my arm slightly bent at the elbows and sit about 4-5 inches from the tank. Also this is my first year riding in 5 years. Am i doing anything wrong or is it just me using muscles that havent been worked this hard in years?