text: Depending on the wax, it might need curing for longer. It purely depends on the FO and wax mix. I've seen lots of people give up on certain FO's because they just don't give off the desired HT.
  
  I don't think mushrooming is caused by level of FO, I think it's caused but the wick being too big. But different wicks also burn different in waxes. I cannot get on with Stabilo wicks at all!
  
  If there is a small mushroom then I wouldn't stress and just trim the wick. If there is a large mushroom then try wicking down. This is why I do wickless testing to get a rough guide before testing properly.
  
  I've learnt loads on this group xx