Join Date: Apr 2012
Location: 9000 ft. ASL in Southwest Colorado, USA
Thanked 3,647 Times in 1,941 Posts
From what you're describing, it sounds like the axle on your bike was installed from the brake side of the swing arm, instead of correctly being installed from the sprocket side of the swing arm. Anyway, the axle nut you're looking for is Ref# 20 in the link you posted.
Former Factory Test Rider/Technician