Do you have them at the rain (when it does)?
My Cymbs are outside, in a north (but bright) balcony.
Prevalent winds here are coming from north or west so they get every storm nature throws at them. The medium is coarse medium/large bark only (the ones with medium size bark took a lot more time to grow as fast as the others with larger bark.
The extreme temps are between 40 ºC (sometimes over that) and avg 8 ºC (occasionally bellow freezing).
Considering this, they don't care if I take care of them or not, they grow and bloom anyway.
Repot time is after blooming is done, which is spring/begining of summer.