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I have a 2005 Si hatchback, i just bought the car last march, no modifications yet mainly because ive gotten a few speeding tickets that im still paying off lol..well just recently ive had some problems with my clutch..basically whats going on is that when i try to switch gears it is getting really tough to pull it out of gear and it is just as tough to put it back into gear..and also when im just at a sit still with the car in first and the clutch pushed down the car shakes and feels like its going to stall, and when i tap the gas and slowly let off the clutch the shaking intensifies and theres hardly any acceleration..now ive checked and refilled the clutch fluid and checked for an leaks in the clutch system..ive heard that it could be my master cylinder but im not quite sure..any ideas with what could be wrong would help