I was cleaning my 400 exc yesterday when something caught my attention. I saw a hairline crank on the adjusting ring near the size 6 allen key bolt. After riding around town last nite, the crack developed to a gap.:scream: Poor me:( got to spend at least a $100 on the repairs. just got the bike for a month and this happened!!!!! Suspected the dealer over tighten the adjusting ring. Is there any after market adjusting ring tat is stronger or I jus have to make sure it's tighten to 8nm of torque???