Ouch my quill on my G0766 started getting Very very hard to turn. So I dis-assembled it and found a couple of burrs on the quill and inside the base. Got out my trusty ultra fine file and some crocus cloth. Worked and worked on it and finally got the burrs off the quill and one small one inside. I have no idea how the heck it happened but it`s SMOOTH now. Back to Nermal.