Great group.
I scanned my parts list and sent it to Ben and Bill it appears I cannot attach PDF below.
The brush-roll does have stiffeners and seems to lack any real wear. Living with a F&G configuration bag is preferred to a new bag less system at least by me. Newer bags or vacuums would mean a screamer. The tone and note of the 6A is mellow lacking in real chaos.
I will keep a small canister handy when changing to capture the small amount of crud that may escape. With practice and technique study I am sure dust escape can be minimized.
Matt