Trikepilot,
Thank you for replying. I can't get the K60s to work for my mix of terrain and riding style, and much preferred the stock Metzlers for off pavement. The Metzlers were very consistent when I would throttle steer. While they weren't great for climbing, the rear gripped better that the K60 does with its slick center strip. The Mitas looks like it will bite better in the dirt, but I'm a little concerned about the rear gripping a lot harder than the front. If you're mixing a Big Block with a K60 front, I can't imagine I'd have any problems, at least off pavement.
It's not just me. I ran across a R1200 rider with K60s who shared my observations, and I suspect it's the dust and sand covered rock that's so prevalent where I ride.