I don't have the fancy scale on my gauge, but after installing the Thermobob, the needle stays right in the middle of the bottom screw in the gauge.on hot days and just in the lower half of that screw on cold days. It keeps the engine at a very stable temp. Prior to installing it the only time it would get above the cold area was when sitting at a red light. As soon as I left the intersection it was right back down at the bottom. In my opinion, it is an add on well worth the $125 and the Kawasaki engineers should have their asses kicked for not including it in their design. Same for the torsion spring in the doohicky.
Never pick a fight with an old man.. If he's too old to fight, he'll just kill you..