Well folks, the Mrs is starting to complain that her M600 needs some additional performance. Over time, I've tuned the suspension, opened the airbox, added a K&N, jetted the carbs, installed a sil-motor system and installed a light flywheel. Her riding is smooth and controlled and her tires are nearly void of chicken strips (< 1/8"). She wrings alot out of the little monster and I'm inclined to agree that she is ready for more performance. My first thought was to go by a new M800; however, she is vertically challenged and emotionally attached to her M600 (that vetoed that idea). So, that leads me to a new performance mod and after poking around on the net and in catalogs it looks like new jugs and HC pistons are in order - available from D.P. (Italy) or via FBF and their machine shop. Parts cost about $1K. I will more than likely do the work my self. Does anyone have experience with either of these? Any other thoughts or input?