Hi, I just saw your message about a vintage Janome.
I belong to a Vintage Singer Group from Yahoo where they discuss machine repair and identification, including repairing a cabinet,etc. By no means it the it set up as well as this group.
They have just started a new group which people who have a machine that is not a Singer may join. You can get a lot of information off of these groups. Even the singer group gives some general information which should cover most machines, including yours.
If you are interested in the non-singer group, check out the following:
http://groups.yahoo.com/group/Vintag...gMachineRepair
The Singer Group is:
http://groups.yahoo.com/group/vintagesingers/
I hope the information you find on these sites will be of help to you. They have been to me.