Hello,
Unfortunately ordering keys by the key # from Yamaha is very unreliable as the seldom work.
The only fix I am aware of is new ignition cyl which comes with 2 new keys.
You simply unbolt the old igniton cylinder, and plug in the new one.
I have included a link to all the fast moving YT-6800 parts for you.
Simply scroll down through the list and select the link for "Main Ignition switch w/keys"
http://blog.yamahagenuineparts.com/search/label/YT6800Please email us if you require any further assistance,
Email "info@yamahagenuineparts.com"
Regards
Speedy
www.YamahaGenuineParts.com