If you're new to ATF squatting, just take it slow and it will take care of itself IMO. Same deal here- I lightened up on the weight so that the bottom was the only difficult part of the movement, then it caught up rather quickly. If you're in the middle of a DF 5x5 run you don't want to just start throwing exercises in- just make progress while keeping your form tight.
I find that deads or any sort of pulling from the floor (power cleans, etc.) will do wonders for hams too. Also, GMs are excellent.