The TOB is covered under the base warranty if it is still in effect. They need to actually hear the issue to cover it though they will not just change the bearing. The rest of the clutch is not covered under the TSB nor warranty even if the TOB is the cause of failure. You will have zero doubt if your TOB starts to go since it will sing you the song of it's people. Loudly!
http://www.ft86club.com/forums/showthread.php?t=117440