I've been following this thread with great interest because I've been notising the same kind of behavor in my Monster (I've had it only for a couple of weeks so I'm not sure If it's just my imagination, though).
You said ffkevinking that you have couple of threads in front visible. So I went to see my bike (which is 800 -04). There is no adjusting in this model

!. At least none in the upper end. Is there any way to increase damping or spring preload with some kind of accessory (or other way)? Or is this just waste of time and money? How important is this?