Looks like the sequoia has brifters. What level Sequoia do you have? If it's base, it has Sora... they're workable, but may require some tweaking to get "just right". I suggest taking it back to your LBS and do your best to describe to them what issues you're having rather than fooling with it yourself at this point.

I will say that my experience with Sora is that the back can be dialed in reasonably well, but the front I've found match your description.