70 mach 1, 4 speed top loader. When letting out clutch in first gear, I hear a brief screechey noise at point of engagement, will also hear in reverse, and when shifting into 2nd, although not as bad into 2nd. can also feel slight vibe in pedal at same time noise is heard .Noise started recently and seems to be getting worse. there is no clutch slipage, and no noise when depressing or releasing cluth pedal if trans not in gear, any help pointing me in right direction would be appreciated