My 1990 has a gas cap that doesn't lock. I'm not sure how the P.O. damaged that lock cylinder, but I can't seem to fix it. I think that means my only choice left is to just buy a matching set of all three items - the helmet lock, the ignition, and the gas cap from someone parting out their bike. Please let me know if you can help me out - you can email me at:
craigoryraino AT gmail.com
or you can PM me here.
At the same time if anyone knows a simple way to fix that cylinder in the gas cap, I'm all ears. My spare caps have different channels inside and so I can't try to re-key it, but if someone out there is a pro at such a thing I'd gladly hire you and send you the cap and the key that needs to fit it!