Making big, melodic dubstep chord stacks may see hard at first, but if you know your stuff it can be pretty easy, The first thing you need to do is add 2 - 3 saw synths. Bassically, jsut put down some heisenbergs add put some saw up/downs waves on them and put a bunch of fx on them until they sound good together. The next thing you need to do is add a saw bass. This is easily done on the pulv. Just put one saw wave (to octaves down) with a little white noise. Then, add a tube. Then I like to add a high lead synth on the top of the chords. I also like to add crowd fx every time the chords play. When all of this is done, add some growls in between the chords. And of course, put in some drums w/ compression. That's about all, I hope this was helpful!