I won.

I just have to pay $100 for a part and the rest of the clutch replacement parts and labour will be covered under warranty - due to the fact that certain parts of the clutch are covered for 5 years. Funny how that never came up until now, isn't it?

Don't be afraid to stand your ground. If you feel you are being treated unfairly, you most likely are. Once they know you mean business, most companies will back down.