I had a TOB go bad on my '97 Cobra. It was actually the 3rd TOB that went bad on the vehicle, the first since I had it. (I only had the car a year for this reason) Since the car had the TOB go bad, what eventually happened was the the TOB wore on the input shaft of the trans. Which means that even if you replace the clutch and TOB, when you get the new one in there the clutch fork will wobble on the input shaft since the TOB is wobbling. The only way to fix this was to have the transmission rebuilt, which I wasn't about to do with that car. Don't worry about the clutch shudder either. I personally have gotten sick of everyone complaining about the shudder. My car has it as well, although any good high performance clutch will have that fallback. As for the TOB being replaced when the clutch is replaced, yes that is a common practice. Although sometimes shops like to take shortcuts and not replace that particular piece. Even though it takes just as much work to replace a TOB as it does a clutch. Another possible problem, unlikely although possible, is that the pilot bushing has gone bad. This is actually the piece that goes inside the flywheel at the end of the input shaft, that holds the input shaft in place with the flywheel. (does that make sense?
) Anyways, I would take it to the dealer and have it checked out before you run into more severe problems than what you have now. Hopefully all works out well for you!