[sdiy] Oscillator Help

[Adam Troyer]

Hello everyone!
I'm a student in Aaron Lanterman's 'Electronics for Music Synthesis' 
class at Georgia Tech, and I'm having
some problems with the oscillator I'm building for our final project.  
He suggested that this would be the place
to go for some help, so here I am!

My design is on page 4 of this pdf: 
http://users.ece.gatech.edu/~lanterma/sdiy/datasheets/comparator/lm392_apnote.pdf,
the 'Exponential V/F Converter for Electronic Music'.

There are two main issues I'm having at the moment.  The first issue is 
with the resistor and 5k pot on the left side
of the schematic.  The resistor on the left doesn't have a value, so 
I've been assuming that the text on the right of
the pot (the '4.7k* select...') was referring to that resistor.  Does 
this seem right?

The second issue is a little more complicated.  When testing the circuit 
yesterday, I was getting some oscillations at the
output pin of C1.  With the 5k 'Zero' pot turned all the way toward the 
input, I would get a short time of about 0 voltage
followed by a long time of constant voltage at this pin (it looked a lot 
like waveform A on page 5, since I'm not describing
it very well).  When I turned the pot away from the input, the 
oscillations would increase in frequency some, but if I turned
the pot too far the voltage at the pin would drop down to nearly 0V and 
stay that way, and wouldn't oscillate again even
if I turned the pot back.  I actually had to turn the circuit's power 
supply off and wait a little while before turning it back on
to get the oscillations to start back up.  Even with the oscillations at 
this pin, though, I wasn't getting any response at the
inverting input of C1.

If anyone has any insight into what's going on with this circuit, it'd 
be greatly appreciated.  I understand the basics of how
it's supposed to work (except for the temperature compensating stuff at 
the bottom of the schematic, that's beyond me),
but I can't figure out what the problem is.  Thanks in advance for your 
help!

-Adam Troyer