i've gotten it to work and not glow at one spot, but it still tastes burnt... I give up.
take a good, close look at the coil, make sure that every part of the coil is in contact with the wick. If just a tiny portion of the coil is off the wick, you'll get the metallic or burnt taste. This is very important. Here's a pic of a coil in my rsst, see how every part of the coil is in contact with the wick?

30g is pretty easy to work with. Also, on my DIDs.. I wrap my wick out of the device. With the negative screw being a thumb screw and sticking up so high, it's hard to wrap the coil around the wick while it's in the device.. it can be done but it's easier for me if I stick a paper clip or something down through the coil and wrap it. Is this a real DID or one of the clones? If it's a clone, I never could get mine to work properly for any length of time. My real DIDs rock. They're tricky to get setup properly but when they are, they're great. If it's a mmvapor's DID, you can visit the
subforum and ask questions.. these people are super helpful and helped me out a lot when I first got mine.
One more thing you should try is making sure the air hole align with the coil properly.
If it's a real DID, the top cap will screw on and line up perfectly.
If this in one of the mini clones, you still need to make sure you have complete wick to coil contact.