Mine has that roast characteristic as well, although it doesnt seem as bad as what youre describing. Is that from the carafa? Its only been carbing in the bottle for about a week and a half, I cracked one a couple of days ago to see how it was holding up and the hops are almost non existent. Still drinkable, but not what I intended (second batch ive brewed)
I was at the local home brew store a week or two ago and the guy was kind enough to share some of his black ipa. He mentioned something about mashing the carafa separate, in a different manner. He said he wanted the color, but to keep the roast flavor down to a minimum. I don't remember the details, but if anyone has some insight to as what I am talking about, please share! When I go back, I will make sure to ask him again.