I would suggest loosening the bar end mounting screw a bit a pull the whole thing out and inspect it. My 2004 was loose and when I undid it I had all the bits loose in the handle bar that I fetched out with a bent wire. I just reassembled it and tightened it up again.
Maybe just grab the weight and turn it clockwise and see if it get tight.
The top being Heavy's previous post of the stock DL650.Grey Wolf... what do you mean when say "bottom picture", I only see one schematic, unless I'm missing something?
See if you can get things apart. That will give you more answers. Parts are available separately using the DL1000 fiche.GW, you are correct... I'm in fact the THIRD owner. Is this likely to require replacement parts, or an entire replacement assembly?