@Rob Fisher just a ecowool tip that I found helps prevent the ends unraveling. After a solid torch, wrap coil, once wrapped, torch again and then fit. Try using side cutters to snip the ecowool wick to size instead of scissors.
As per my previous post I usually double over the ecowool and have also found that if wicking is impaired if I wrap the coil too tightly.
Good luck.
Thanks Markus! Will try the double ekowool trick as well today!