I've just done a search Hotpoop and on the old Yuku forums, but I've not found anything that seems to refer to this
I've thought about simply hack-sawing the glass out of the housing, but I'm keeping that as a last resort. Also, of course, there's still the matter of getting it into the replacement housing.
It would be so much easier if I could just undo the bolt that holds the housing on the stem and put it onto the other one, but, of course, the bolt is *behind*the glass! This does, of course, rather imply that there is a way of getting the glass into the housing after it's bolted to the stem, but I don't know how it's done.