I wish I had an encyclopedic memory of where I find the stuff I read... I recall specifically that clomid is 'suppressive' by actually desensitizing the receptors in the pituitary to the influence of gnrh I believe, now I have to do some searching for the study on that one, but it was theorized that the benefits in stimulating the hpta would start to be countered by this inhibitory effect after a certain period of time
Yes, I agree, the HCG was working, as his testicles are working, even now with low FSH and LH, this doesn't prove that the HCG was working to achieve the final goal, just proves that HCG worked to stimulate his testicles to produce. If there was a feasible long term hcg hrt method, then that would be great, but any of us that have tried to live on hcg alone for any period of time finds out that the dosing and time-duration-effects are impossible to optimize (maybe an insulin pump might work? completely off topic to his current issue though)
The bottom line is that your hypo and pit are not producing as much fsh and lh as they should be, any studies I have seen show that these values should be at their highest while still on your nolvadex protocal.
What would I do if it was me? You say you are feeling ok and strength is ok, so it seems to me it is not a panic emergency, I would stay the course on the nolva, take no clomid, no hcg, no test, and see how your numbers look in a week or two.