Also...make sure the wick is NOT touching the bottom of the tank.
My wicks touch the bottom all the time and I don't juice burn, oxidize, or quench in water. All I do is a quick burn before I roll it up just to clean the mesh. The way I look at it the wick is touching the sides of the hole it goes into so why can't it touch the bottom. Mind you it's not jammed into the bottom, that'd probably be a problem.