You could reuse that wick as a last resort if you truly have none handy. Like I said, I carefully remove the wick jammed between the resistors, then fold and fluff to form a little folded "pillow" sitting in the bottom of the smoke cup. I ensure at all costs the little slot rear entry from the fan is not blocked, and then put the PCB back on. This provides a large clean airflow space above the resistors and allows the smoke to rise off of them and then be caught in the outgoing airflow.
Again, first things first, no more wick jammed between the resistors. That creates a hot spot on the resistors and just chars the wick. Not only that, but I've seen brand new engines with no or low smoke output because the wick was blocking most of the airflow from the fan.
You could search for Tiki torch wick but basically you ideally want the soft fiberglass type. Avoid cotton.
