I was sick of wasting a million cartos trying to test flavors, so as a first time dripper I decided to add a LR 306 atty to my order, this thing is easy to use! I thought there was primer so I blew out on the mouthpiece side there wasn't any. I just directly placed 4drops on each side of the bridge then put on the drip tip let it soak for a few seconds and took a hit. I found that removing the drip tip and dripping in the square manner was an easy way to get flavor. When switching all I did was blow out the mouthpiece end and try a new flavor. If you're going to try eJoker try it last! flavor is strong and stays on the atty a little longer than any other flavor I tried. I tested light colored flavors to dark so I wouldn't taint the next flavor. I wouldn't hesitate to order the 306 from Don again its simple to use. My only other dripping experience being with a 510 SR Joye which I HATE because it leaked so much, thats not an issue with the 306.
I received this atty today if that matters, about an hour ago hahaha.