by Zach Grant L1011jock » Mon Jun 27, 2011 1:42 am
Those are non structural interior pieces, as such, you can pretty much substitute any servicable knob that fits on the the shaft as an owner part, and sign it off yourself as preventitive maint. Replace all 4 as a matching set. Talk to an interior shop if you are having trouble sourcing. They will be able to help.
-Zach
"Keep it above 5 feet and don't do nuthin dumb!"