Well after we replaced the clutch and slave we have had about 3 months of trouble free driving until the weather turned cold. Now we are back to the same symptoms. I am thinking the master cylinder is bad but it does not show any sign of leaking and the brakes are functioning properly (are the brake and clutch master shared?). The fluid level has remained constant, no leaks that I can see. What should I look at or check? Does this sound like a bad clutch master like I suspect?