Ok I have a lifted 93 fullsize blazer. It came lifted with this lift. 1993 Chevrolet Blazer Rancho Lift Kit RS6568

Every part of the front suspension has been redone. The previous owner did it when he did the lift. I went ahead and did the pitman and idler arm since that was the only thing not done. When I hit any major bump or brake hard the truck jerks to the right. Is this from steer bump? I doesn't have wobble at all when driving only when I hit a big bump or brake really hard. What should I look at to try and fix this issue? Please don't say steering stabilizer, I want to fix it not hide the issue.