Scale Infested Burrageara

[stargazie]

hi and help please.
My son brought me his Burr. Austin Powers Sweet Summer Morning to cure it.
It was really loaded with scale. Needless to say I put it in the quarantine area of my house first.
I have done everything I can think,of, starting with the green solutions, alcohol/Soap spray, removing the scale and egg cases I could see, (every day)', threw away medium and pot, washed plant, and roots, removed some leaves to get down to pseudo bulbs, repotted , and even treated with a commercial insecticide.
It seems to be scale free for the moment, however, the poor thing really looks the worse for wear and with scale I am never confident that it is "really gone"
I am looking for a replacement plant (because sometimes it best to just cut your losses, right.) however I cannot find a Burr. Austin Powers Sweet Summer Morning anywhere.
Does anyone have further tips for scale that I haven't tried and does anyone know where I might locate a replacement for his collection.
Thanks in advance for your help
Starr