I have 2 tanks on the go, clean/rewick coil every 2-3 days , around 10 to 15 minutes for both. I don't really understand rewicking a dirty coil. I don't really agree it's easier to throw in a new coil than clean a coil either. Take wick out, wipe off the majority of the gunk with tissue,knock a little more off with a sharp edge, little heat for any residual and rewick. That's a hell of a lot easier than unscrewing a coil, making a new coil, placing the new coil in, screw it down, adjust adjust adust, snip ends. I'm not suprised you're rewicking to get a fresh taste if you're putting the new wick in a dirty coil, that doesn't make any sense to me.