have a loud bearing going out kind of noise coming from my a/c compressor - it gets slightly better when the clutch kicks in - do you think changing the clutch would fix the noise or should i just get an entire compressor with the clutch already attached - as of now the a/c works great and i dont want to spend the extra money, but i thought before i took it off i would ask if anyone has ever changed just the clutch assembly before and how hard it was to get the old clutch free and the new one attached again to the old compressor - thanks for any advice