Golan, on 09 January 2012 - 11:07, said:
You should first simplify the wire mesh. About five joints should be more than enough. See this sketch:
Now, the easiest solution is to link the green vertex groups to the turret pitch bone (green) and all others to the turret turn bone (red). An advanced solution would be to give the blue bones a second bone influence from the pitch bone with a weight of about 25% - AFAIK the normal WWSkin modifier does not export secondary bone influences properly, so you'd have to search for a solution on how to do this manually.
Thanks for the detailed explanation, I will investigate this at a future date.