I have a couple cinnamon trees. One of them is doing excellent, but the other seems to be struggling for some reason. At first, I thought it was because the leaves were burned a bit last summer when I moved them outside, but the new leaves are having some trouble now too. The end of the leaves seem to be constricted, and sometimes die part way back. The new shoots trying to grow seem to be struggling as well. I can't see any signs of spider mites or other pests, but I'm wondering about treating it with some kind of miticide (doing that perked up some orange trees I used to have). I've included a few photos of the sick plant, as well as one of the healthy plant, and they are the same age. Any thoughts?