Thanks for your advice Amy. I can't tell if any of the current roots are starting to rot, but fungicide would probably be a good idea. I was hoping changing to the coir medium would get rid of the wrinkling, but so far it's not working. I think it needs to grow new roots!

Here are the rest of the photos:
is this root starting to rot?



I got rid of the black nub in the photo since it was rotted and pulled out easily. I have the most hope for the two roots at the top of the photo since they sort of look like they have white tips.


While I was taking these pictures I noticed those two little bumps above the roots, are those the start of new roots or am I being too hopeful?