From the link I provided:
Serious
This indicates mycoplasma infection. The bacteria enters the plant's roots and then its leaves from soil that contains horse manure. Your source nursery needs to know they're selling diseased plants (ask for a refund). Once in a plant's tissues, the only treatment is Agri-mycin, a pricey horticultural antibiotic. Learn more in the Disease section of my video: Dick Wright on How to Grow Echeverias. Fast forward to 6:06.
Link to the video (I haven't watched it):
https://www.youtube.com/watch?...
Hopefully there's something in it that will help you determine your course. The link in my post above this one mentions Agri-mycin. I haven't used it and don't know anything about it, but it might be worth reading up on.
Al