Thanks for all the help, the confusing thing is that they seem to measure wick differently here in the UK, so I dont know what these measurements are in our terms! LOL!! here they are measured like 3x16C, 3x18C, 3x20C etc... (the C stands for cotton) So do you think I would stand a better chance using zinc cored wick?? I have found a store in the UK that sells zinc core that is 44-24-18!! Shall I try that out?