Some citrus can be tricky, yes. So can some bakery types.    CD4 is a reasonable starting piint.  You can always go up in future tests.     I would not be surprised if CD5 or CD6 gets you where you need to be. I use 3xCD6 in my 5" ceramic with both coconut and soy blends.  The flames are a nice height (in proportion with the vessel). If you can point the curl from each wick in opposite directions in a tin you might be AOK. (Look at the braid of the wick. One side is a stack o