IGI 4630 is a great wax, it is a true single pour wax, works with most FOs and has great CT and HT. It is, however, prone to smoking. One solution that people do is to use 4630 as a base wax for mixing in a soy wax. This helps a lot with the smoking as well as choosing the right wick and not overloading the wax with additional oil (FO). There is also a chance that a different wick will help, one that I don't know about, just depends on how much searching you want to do. I use 4630 a lot. LX wicks tend to make tall flames so I am not sure that these are the best choice for ths wax.