So i got my bike back from the garage on thursday. Some people may know, i had a new set of clutch plates and springs fitted (EBC parts) i rode it home, fine. I rode to work and back friday (30 miles) all fine. I went out on a ride today, about 50 miles. All was fine until about 35 miles, after that everytime i gave a handfull of throttle in any gear, the clutch would slip badly making the engine revs etc. The garage who drilled the bolt out for me, adjusted the clutch cable for me on thursday, they test drove it before i got it back.
So why would my newly installed clutch start slipping now, after 2 days of riding fine, then at the end of a long ride it starts slipping every time I try to open it up?