I had new clutch master and slave cylinders replaced 2K miles ago (about 10 months). After installation, sometimes when trying to start, I noticed that I would have to push the clutch pedal hard all the way to the floor in order to start. After sitting for a couple of weeks I wanted to take the car out for a spin. When I pushed the clutch in to start, there was no pressure. I checked the reservoir to find the fluid was at the bottom which I then filled. After filling, there still was no pressure--probably air in lines. I don't see any leak marks in the car or on the floor. Could these be related problems or separate issues? I'm taking the car back to the shop, but I would like opinions first. The shop is reputable and has been working on Z cars for many years.