christophe said:
I'm a little baffled why you are measuring voltages from the positive rail?, it doesn't actually really make any difference - but it's common practice to measure from the 0V rail (the negative on a single rail supply).
Probably the first thing to do is check it's oscillating, you need access to a scope to do that - you must also use a x10 probe, a x1 probe will stop the oscillator.