If the DE doesn't open you can always pick it of of the dial's context menu (The little triangle next to each dial). You shouldn't need a restart for the DE to open. That's weird.

Making a linked dial in two body parts is a 'linkParm" Vicky 4 has about a million of them. They look like this:

linkParms    BODY:1
PBMToeBigCurlR
rToe:1
PBMToeBigCurl

They go in the "figure" section just above the "weld" lines