Last night I pulled out an old Wangtek 5000 series QIC tape drive (uses DC300XL carts) and discovered that the rubber capstan had totally degraded and fell to pieces. After looking at bits of rubber and vinyl hose as possible replacements, I hit on using a plain old vinyl grommet that fit snugly on the bare shaft and, for good measure, added a nitrile O- ring to fill the "slot" in the grommet. Worked like a champ. Maybe this will be useful to others. --Chuck