I am sad to report that my efforts were fruitless, this poor P.Regalis died last night. The bulge in the pic above receded, but didn't seem to make a difference, I think if I had taken over the care of it sooner it's chances of living might have been marginally more.
Anyway, this is ppurely my opinion, but in retrospect, I believe we should not try to revive T's affected with DKS or other serious illnesses that may be passed on to next generations. I have now read that someone who managed to save a T from DKS bred with it and a good number of the resulting slings developed DKS within a year or so.
HS