I changed out the old style rollers on my MM200 to the quick-change type. Thought I'd share pics. I took the drive gears off a different machine, but Miller confirmed they make a kit to do the same thing. Makes cleaning/changing sizes a much easier job.

Old Style 3 screw
http://i33.photobucket.com/albums/d82/TJshare/PBB/DSC01831.jpg
Quick change style gear - open
http://i33.photobucket.com/albums/d82/TJshare/PBB/DSC01835.jpg
Quick change style gear - closed/locked with drive roller installed
http://i33.photobucket.com/albums/d82/TJshare/PBB/DSC01838.jpg
Quick change rollers installed on MM200
http://i33.photobucket.com/albums/d82/TJshare/PBB/DSC01839.jpg

Excuse the dust & crud in pictures - I'm not finished cleaning out the machine