Broken Stud, Puzzled by Rear Hub no Spacer

I recently busted a rear wheel stud on my 07 660 Sport.  When I went to the Yamahaha parts breakdown, I find something that looks very different than mine!  The parts diagram shows a rear hub with no studs in it.  The studs are mounted in a "spacer assy" that bolts to the hub.  I ain't got no "spacer assy"!

Since I bought my Rhino used and do not know what mods the PO did, I'm left guessing on what I should actually be seeing.  I do know the tires and wheels are not stock (Terracross R/T with ITP SS 112 14" rims), so that suggests that maybe the hub was changed to go with the bigger rims?  But here is the really mystifying part - the Yamahaha shop manual shows a rear hub just like mine (just a plane flat hub with four studs in it and no "spacer assy" - page 8-14).

Anybody know why the parts breakdown shows a hub without studs + "spacer assy", but the shop manual just shows a normal hub with studs? 

More importantly, what stud do I need?   I tried just going to the auto parts store to buy a generic stud, but they don't carry anything smaller than M12, so no joy there. I know it is an M10 x 1.25 x 32mm, but of course Yamahaha does not provide the specs for their studs, so I have no idea if the rear stud that mounts in the "spacer assy" is the same as the one mounted directly in my hub.  The parts breakdown for the front hubs does show studs installed directly in them, just like my rear hub, but those studs have a different part number, so that is not any help at all unless I want to go punch one of them out to see if it is the same as my rear stud.

Thanx in advance for any help you can give me,
Mauser

i have the studs....sounds like the recall wasnt done

Yeah When they did the recall they updated the parts fiche to show a spacer. Original rhinos had no spacer. 
just order the studs from James

I guess that explains it - glad no spacer was put on this one - those Terracross tires are plenty wide enough without it!

James' price on the stud was certainly reasonable (ordered it).  Too bad he doesn't have the ITP lug nuts also.  Had to order those somewhere else. 

Thanx for the replies and help guys!
Mauser