Thank-you Bertus. Very helpful as always. A bit of context, and then a status update. The gentleman who created the original circuit I was trying to get to work (I beleive his name is Brian Wampler) was kind enough to give me some guidance through an email exchange. Understandably, he suggested I go to DIY Stompboxes to learn more. That's where I found the new circuit.
I built it on a breadboard and it worked perfectly. However, it was short lived and then reverted to the same old problem - no distortion. But before that happened, I clearly heard distortion with just the op amp operating, and then different distortion when i added the three diodes. So, I thought- great- finally. But then something happened and I lost all the distortion. So it may be one of two things:
1. The breadboard method got unstable- easy fix- move to PCB. and/OR
2. The capacitors I am using are not the right ones. Let me explain:
I have the right diodes (I purchased them specifically for this- thanks for the substitution suggestion though Bertus). I have the right resistors.(pretty easy to find those). But the capacitors are confusing. I have film, ceramic and electrolytic capacitors. I am not sure what type to use when. I wish the gentleman who created this, would have been specific in that way. I note he uses ceramics, it looks like electrolytic are also used and i have to assume films. But I don't know for which and, as I have learned, polarity is important when using electrolytics.
Could it be that although i am using ther right capacitance values, using the incorrect type of capacitor may have caused the circuit to stop working and maybe even damaged the op amp??
Ideally, i'd like to clarify this second question on capacitors before I proceed to a PCB attempt.
Now that Bertus has made it easy by providing the direct links to each step, if anyone has any other advice, I'm all ears.
Plus, my wife is starting to wonder what the heck is taking so long and why i am working on the same thing over and over ;-). Today she said, "are you back down in that hole" (my basement. lol)