I just got my DID today. I am very, very disappointed with this crap. I have changed the coil 6 times now, replaced the wire mesh twice. Still a piece of crap. The first problem I noticed right away is it is too airy. The air inlet hole should have been drilled smaller so the user can have the option to enlarge it very very slowly in small increments. The best thing they did is switch to stainless steel center rod and knurled nuts from brass. Gone is the allen panhead screws, but why not Philip head screws? With the Philip heads they will not fall off so easily. The wire mesh is the main problem. The coil windings short out onto the mesh itself. I watch it do it when the wick dries up. I wish he, the designer, knew that a ceramic type wick material is available, at least in the USA. They are available in different porosities. I found it when I was searching for the best wick to use if I have to change to a better material because I suspected that the wire mesh is a potential short circuit problem. They are available custom built to whatever dimensions you want. I hope they get to read this post. Why do those reviewers of the DID don't seem to report the negatives? Say it like it is! I do not recommend this DID to anyone. It really DID upset me very much.