I have built the Pic Programmer 2 by JDM but it is not working. I have built many circuits and have double/triple checked this. I have a few questions that maybe somebody can answer. 1) Does this programmer work with JDM84 and PIP-02? 2) I have used 2N3906 transistors. Is this a problem?? 3) I have used 1N4007 for the non-zener diodes. Is this OK?? 4) I have used a 9v zener instead of 8.2v (Radio Shack had none). Should this be OK?? Thanks in advance. John Mullan