I bought a high-mileage (150,000) CDT Tourer last year, which I'm in general delighted with. However, one of the things which was much touted about the 75 was the ride quality, but I have to say that I don't find the ride quality of mine to be anything that special. It's rather joggly and I do feel the bumps in the road. Now, it strikes me that this may be because of wear in some components, as 156,000 miles (which it now is) is a fair amount. But what components might they be? What is involved in ride quality as such, what should I get checked out?