While you are waiting, you can make your own drip tip of sorts. Just take the polyfill out of one of your carts. Or use a cart that came on the atty- same thing. If your atomizer is dry, just place a few drops right onto your atty and pop your empty cart back on. It will vape similar to a drip tip, you'll just have to pop it off you atty to refill instead. The cart serves as the mouthpiece basically. You don't want any juice in it.
When to refill?
This takes some experience. Don't over drip your atty. Wait until you can taste/feel it is getting dry. If too dry, it will taste awful and give you a scorching throat hit! The point is, add a few drops right before that nasty hit would take place. Most say use three drops per fill. If really dry, use 4. If your not sure it is dry yet, use 2 drops, etc... You'll get the hang of it sooner than you think. Another nice thing about dripping with an empty cart is that you're less likely to suck juice into your mouth. Yummy! Using an empty cart is a great way to learn dripping.
So the only liquid you are putting in, is directly on the atomizer? How many hits do you get off 3 drops on the atomizer? I will definately try it. I gotta get some decent flavor out of this thing. I guess the plastic taste I'm getting is probably the burnt taste you talk about.