The Destroyer is great. I suggest getting an Eagle X mold, keeping the Roc, and getting a Wizard or Warlock putter.
Anyway, he said he had a Roc and an Aviar, I suggested a more stable putter on DGCR as well. From what they said his accuracy isn't all that bad, but who can't use more accuracy?!?!?! I was going to post these last night, but got sleepy and didn't feel like getting back up to post the links to the threads. Anyway, here are some links to get you started.
The Technique section can be found on the board index.
viewtopic.php?f=2&t=8925
Technique primer, large collection of vids, and other topics on technique.
viewtopic.php?f=2&t=16564
About throwing nose down and how getting your weight forward helps. Which I noticed I think you could possibly use some more weight forward.
http://www.discgolfreview.com/resources/articles.shtml
Off the main site, gives a run down of some articles around the net, and some written by Blake.
There are more, but that is a lot and I'm sure you'll find other stuff a long the way. It's actually kind of hard to find specific articles just pertaining to a specific idea. As they all sort of mix and mingle. But, try not to get caught up on too many of the long winded discussions. You have a lot of what this site discusses, you need some of the more basics about keeping your pull tight, pulling on plane, trying to keep the nose down. Using a little less run up, and keeping it smoother, as well as clean finish with weight forward and nice pivot.






