Picked up my new (to me) D90 from the shop yesterday after having several upgrades and mods done, none of which had anything to do with the clutch, and the clutch seemed to be sticking a little. This morning, when I backed out of the garage and took my foot off the clutch, it stuck completely, fully depressed. I had to push it hard a couple of times to get it to release. I also noticed some fluid on the floor mat directly under the pedal. Not much, maybe 3 or 4 drops worth, that seems to have dripped from the clutch pedal. Drove it around for a couple of hrs and as soon as it warmed up, it seemed ok. Thoughts?