[Radioroslyn]

Mike, Mike, Mike, Mike, Mike!
What day is it??
It's the day you will see how the chassis is mounted!!
(Sorry had to do it!) http://www.flickr.com/photos/53710524@N06/9680804517/
Here's some pics of a 37-116 /121 with the wooden braces on and the inside of the cabinet. Your set is a code 122 but they the same. This is where the extra pieces go. I couldn't put my hands on the long screws that go from the wooden side pieces down though the cabinet. As you can see there are some rubber washers mounted in the cabinet along the front and rear edges. The long screws also have these washers too.
I made up a pair of mounts for the other 37-116 I've got. It's easy just need a drill and hand saw.
Hope this brings it in to focus. As for the J bolts I've never seen them but I'm no expert and have only seen 4 or five of these sets. Some had no mounting but center rear screw and others had the wooden braces.
Terry