I've been using Johnson Creek juice since a couple of days after I started vaping. The only time I've had to clean an atomizer is when I go from the menthol to any other flavor... ... that stuff just won't stop as far as adding that menthol taste. Other than that, I've no no problems with their juice.
Using standard Tornado package from Totally Wicked (eGo?). Carts cleared, cleaned, and repacked with polyfill.
As a random note... not really relating to their juices. I got the sampler pack from them and the Black Cherry had leaked and I lost about half of it in shipping. I emailed them and asked if I could get another Black Cherry vial... after a few questions they sent me another Black Cherry vial... ... in another complete sampler pack, including the tin. Really great service.
... reminds me I need to order more of the Tennessee Cured, Espresso and Mint Chocolate (I mix the espresso and mint chocolate about 50/50... REALLY good) from them.