Quote Originally Posted by dehrlich View Post
The shaft gets a little warmer than I like it, but not like melting hot. I assume all that was lubed properly.... but I know what happens when you assume.
I know it sounds strange but, if any lube from the flex shaft gets inside the top hat it will make it run hot. Take the top hat off and wipe out as much of the oil/lube as you can. Eventually, it will start to cool down with use.