Stop me if you have already tried this, but occluding the optic and doing a bunch of dry work that way (or live if you are ammo rich) can help a lot with learning to target focus.I've found my groups to be very good, but speed is a little slow as I'm still used to focusing on the front sight (even though I can't actually focus on it anymore). I'm good at target focus for the first few drills, but I still revert back to front sight focus after that. It's weird how I'll find myself drawing and actually trying to focus on the dot. I'll notice it and then consciously revert back to focusing on the target.