MOTM

I just completed my second 300 Oscillator.   It appears that 
everything works fine except the Sine and Triangle have no output.  
The Saw and Pulse work fine.   

Any suggestions as to where I should look?   I have checked over the 
board, things look fine.   The output for the Sine and Tri are just 
completely dead.   I have not checked any voltages anywhere yet.

Please send any suggestions, I am not a EE, I do have a DVM, I do not 
have a scope.

Thanks
Andy Miller