Wobbling bits in dremel chucks.

I don't know about the rest of you but I have been having all kinds of problems getting drills (or any other bits for that matter) to run true in my Dremel chucks.  I never have figured how to take them apart to clean them and trying to blow them out with compressed air had no effect, either did blasting them with brake free or other lubricants.  Out of frustration I took the chuck off of the tool and proceeded to spin the chuck teeth in the chuck housing and lo and behold, a fair amount of GREASE covered crud came out.  A staight dental pick seemed to work the best.

I then proceeded to clean out the chuck with degreaser and lubed it with fine graphite powder.  Just got done drilling a hole with a #80 bit and had zero run out. It's like having a new tool!  Maybe I'm just ignorant and all of you other guys have already figured this out but if you haven't, give it a try and let me know how it works.

                                                                                      Pat.

P.S.  If you do any grinding using the chuck as a tool holder you'll have to clean it after each use.