Not much rubbish came out of the brushroll. Still dusty in there though. Put a few drops of oil on the bearings, which eased them up a bit. Must buy some Tardis so I can strip them clean, then re-pack them with grease.
Made a fake mess (with the bag I've used in my other tp's for a few months, so I know where the dust came from! That's why I use bojack bags for use, keeping the gen Hoover ones for storage with the machine, or show)