this would be my first guess as well. also the cheapest first attempt to fix the problem.Tried bleeding the system?
I think it would be extremely rare for the spring to wear out on the clutch peddle. But I guess possible.I'm hoping that it is just a "return" spring that is mounted on the Pedal. I have a feeling it is the "return" spring that would be Inside the Master. I don't know, haven't really looked at any diagrams of the clutch system. Maybe thats what I should be doing at work??? hahah