Hello, I received my V5 when it first came out .what a work of genius. It has worked great till last nite. I have it set give me the most air when drawing perfect for me but last nite it was like it was set to the most restrictive draw setting .Installed a new coil and wick 4 or 5 days ago nothing different in the way I have been doing it from day one. I wash it when when I R&R wick or coil build that same I am at a loss. Thanks for any in site you may have for a fix.