Front end

Hey guys I have an 08 3500 srw and wondering what to do about the front end. I recently had thuren 3inch lift installed. I also upgraded the front steering to the T-style. Installed a new carli steering stabilizer and also had a redhead gearbox installed. The truck drove great for two weeks. But now the steering just feels loose. A bump in the road will cause the truck to go that direction. The highways here have a slight crown to them and can be uneven and it just feels like the truck is all over now. Ball joints are a year old with maybe 20,000 miles on them. Never had a problem before until I did all the work to it. Also it has new toyo r/t 35x12.5x18 on and they were balanced after the front work was done.