I am at the end of my rope, please help

Ralph, I would add to your list the experimental reversal of cartridge phase on one channel-- no matter what the ohmmeter says. Incorrect relative phase will definitely shift the image to one side.

Also, has each tonearm wire been checked with an ohmmeter to confirm that there are no leaks between the wires or from any wire to ground?

Good point David. I had that demonstrated in spades at the recent RMAF. The complaint in the system was that the image was off to one side and it was being blamed on the amps. What was really going on was that the speaker was out of phase in one channel. As soon as that was corrected, the image was exactly centered.

I don't know if this would be a contributing factor on not.In the 70s to 80s,I did some recording from LP's to tape,it didn't matter what system or combination of gear,the right channel always read higher than the left,if memory is correct . When I tried to match them up with the VU meters,I ended up with a imbalance between left and right channels.

Audiorader, I am not sure this is even important, but when you say that the problem switched from one side to the other after you switched the pairs of leads at the cartridge clips, do you mean as measured by the Foz or did you also listen to some music and confirm that the lower output problem had now switched to the opposite channel in your whole system?

Apropos of the question of phase, I agree with Dave and Atmasphere that this could be the issue. One wonders whether your headshell is miswired so that in one channel the "hot" clip is really going to ground in the preamp, and the "ground" clip is actually going to the hot pin on the RCA plug. Thus all could appear to be correctly wired while in fact that one channel is out of phase with respect to the other. This defect also does serious damage to bass coherence and stereo imaging. It's hard to listen to, in fact. If your tt, platter, and tonearm mount are all level and plane parallel to each other, then phase error is a possible cause.

I have solved the problem! Thanks to Atmosphere and many others great advice, I have found the problem or two problems to be more accurate. I started checking all of the components and found a bad 5687 tube on the left side of my Steelhead, that explained why I was hearing the image shifted so far to the right. The second problem is the Fozgometer. I have now received 10 emails from people who had read this thread and have had exactly the same problem. It seems that the Fozgometer has a design flaw and does not work in all situations. One person that I have been emailing with has three tables and found the Foz works great on two of his tables but on the third it always reads much higher on the right side. He has also changed the arm, cart and cable numerous times and has tried many different manufactures but the Foz always reads the same. He is having none of the center image sound stage issues that would be obvious with a right channel 5-6 DB louder than the left. Thank you all for your help. It seems that I put too much confidence in a piece of measuring equipment and since it was confirmed by what I was hearing I was convinced it was right. It was wrong and once I found the bad tube I was able to move the right speaker forward to match the left, set the Azimuth by ear and now my sound is chilling!