Clutct problem, too

[paanta at splatterfish.com]

All,

The clutch was fine two days ago, and also fine yesterday, on my
new '88 5KCSQ.  However, when I got in the car this morning and
started it up, the clutch stuck half-way up.  I was able to flip it up with
my toe.  It did this the next time I used the clutch, but then was OK
for the rest of my drive.

At lunchtime, pushing in the clutch pedal all the way wasn't enough
to disengage it, and the car hopped forward when I went to start it.
Clutch pedal stuck to the floor this time, not half-way up as before.  I
pumped it a few times and then it was OK for the rest of my drive.

Does this sound suspiciously like a clutch master cylinder or is it the
slave?  Replacement of the master isn't too hard to do yourself, is it?
The slave seems like a much harder to access bit...so hopefully y'all
will tell me it's just the MC.

Where's the cheapest place to get a new MC?

Thanks,
-Pat