Ugh.....that's awful. So sorry.
I will only add a couple things. I never really got back to running. Once cleared to do so, I tried and developed a deep ache in the operated hip after about 3/4 mile. This persisted through a round of PT. Eventually, I gave up because I could literally do everything else. Tennis, HIIT training, Insanity videos, etc. HOWEVER, over the last year I joined a boot-camp style gym, and that class worked my lower body more than I've EVER done. After maybe six months of that class, I was able to run (albeit slowly) just over 2 1/2 miles before the pain set in. So, I think that training - and the focus it had on all my lower-body muscles - was critical in that small success.
I also remember clunking after my first surgery. It mostly happened in the period between 6 and 12 months post-op. It wasn't until 6 months that patients of Dr. Gross are cleared to return to all activity, and that's when I would notice it. By 12 months, pretty much all the muscles around the hip are strengthened enough to prevent the clunking.
I only mention this suggest that perhaps a focus on lower-body strengthening might help with the clunking. Now, you may have done this already, and if so please excuse my suggestion.
I wish you the best.