hey guys, on my 97 mazda, i have a small problem with the clutch. whenever i crank the car, when i first push the pedal in, it works good. if i hold it in tho, it seems to lose pressure. the car will start to move evrn tho i have the clutch pressed in. if i take my foot off and pump it once or twice, itll disengange like normal. its a hydraulic clutch, and its full of fluid. it was low when i first got it, but since ive topped it off it doesnt seem to have lost any. i thought there might be a hole in the line, but i dont really see any leaks. has anybody else had this problem? any suggestions? thanks yall