You know what I did get a good pointer from Busardo that I'd never seen before. You know how a lot of time you put a new coil in and it doesn't heat consistently from the inside out. What he showed was in the review of the rose. You install the coil assuming you have a good coil that has been wrapped on a coil master or some such you just heat it up in the device let off the button then scrape the flathead part of the screwdriiver that comes with most device accross the coil one way then the other and voila you have a perfectly heating coil. Amazing. I've never seen that done and it worked perfectly
Yes I noticed a guy called Trevor Jones do it when I was watching his video on the Goblin. He was the first I saw do it so therefore to me he came up with it.
PapaSloth however explained what it does , I think the wire when heated gets an oxidation build up and scraping it breaks that layer.