Have you messed with that trigger set screw yet? That thing will work wonders for your trigger if you don't know it already. I have actually taken mine all the way out and have lost it somewhere. I've been meaning to have Thompson Center send me a new one just to have it. I wouldn't use it anyway. I just hate to be without it. So if you take your's all the way out to get the lightest pull possible, put it where you'll remember where it is. It's very tiny.
By the way, if you didn't know, it's the screw that's between the two triggers.