Thanks, this is making more sense now. So I think my frame has a 6mm wide 'shaft' for the eyelet, but 5th element requires an 8mm shaft. So either I need a new shock kit, or some kind of 2mm spacer?
I don't have the measurements because I'm at my parents until the 19th. Then I will figure out the diameters and go rouge on this (because the kits on ebay are 30 dollars and I bought this shock for about half that.) By rogue I mean create some kind of spacer. Maybe curling up sheet metal, pressing it in there, and covering it in lithium grease (because there will probably be some play that would create friction/heat). Does this sound dumb? Even if it's far from perfect I'll be happy.