| On my 888 there is no spacer on the LHS. I noticed this when Fordie and me changed the rear sprocket. I was expecting there to be a spacer just like the one on my ST, but there wasn't one. I was certain that nothing dropped off when we changed the sprocket but, just in case, we spent about 10 minutes looking all over the garage floor then decided that it didn't have a spacer in the first place.
When the wheel is back in place there is only about 2mm clearance between the sprocket bolts and the swingarm. However, I've asked loads of 888 owners and ex owners and this tiny clearance is normal (I still don't like it mind you).
Obviously, the sprocket bolts are seated in the cush drive. Could it be that the cush rubbers are seated a bit proud (or maybe the wrong ones) and the bolts are now fouling the swingarm - wouldn't take much to take up that 2mm or so clearance....only 2mm or so in fact. | 
Jools
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