Hi, thanks so much for replying. I wiped the bottom of a frond with rubbing alcohol, and the tissue had some brown tinges afterwards; there were still bumps on the leaf, but there may have been fewer, if there were it wasn't a noticeable difference. So not definitive if it's scale or not, I guess.
I took a couple more pictures of the new growth.
This pic is what I would call the healthier new growth:
this photo shows the healthier growth on the right rear, the spotted/ratty one to the foreground:
And this pic is a different angle of the spotty sheath:
And this last random photo, which I'm sure will clarify everything:
So I guess I'm asking if the spotty looking sheath- thing of new growth appears"normal and healthy" or weird/diseased/infested?
I wish I had a healthy palm to compare to in person!!!
Thanks so much!