Cym growths

[Cym Ladye]

I cannot believe coir/spag works with your Cyms, but I have heard of worse mixes that work under the conditions of an owner. If you say it works for you, then let it be.

No, I would not repot again now, but next spring I would seriously consider moving the plant to a mix with better aeration. Just do not overwater it this winter as the mix you are using holds water forever but if allowed to dry out, is almost impossible to rewet.