The remaining chamber floor and ring sections were brushed although tools remained problematic. As of 2:30 pm, 32 sections had been through first vacuum. The crew will stay in chamber today until the entire upper chamber has been vacuumed so that we can pull the bellows protection and get fibers off the support tubes on Monday.Zack and Randy were able to work on drills a little bit today which is good because the small replacement bearings arrived.