I am testing some containers,and they are burning good only if you keep the wicks trim short.I tried burning without triming,and they smoked really bad.I am afraid if I wick down the wick will drown out.It's hard to get it across to people to trim the wick.I don't know if I should wick down or not.What would you suggest.I hope I have explained this right.They are 16 oz apot jars,two 51z's,JS123 wax. Thanks,Anna