Mark L. Chris, and Mick worked at HAM3 all day.  Checklist was updated and reviewed with crew. Viton strips were attached to dust barriers so that the barriers were ready for install. Feedthroughs and viewport were removed from the chamber and preserved clean. Initial inspection was completed and documentation photos taken. The support tubes had so many fibers on them that the fibers must be "picked" prior to bellows protection being installed so no "brushing" went on today.