2013 f250 6.7 4x4 crew cab 8ft bed. Ok, let's start off with what it is not. Track bar bracket all 5 bolts properly torqued, track bar bolt torque at 405lb. Pitman arm nut at 350lb. I bought a 4ft 3/4 torque wrench for this. All new ball joints, new tie rods, 6 inch lift 37s, new redhead steering box, I Carli track bar, pmf drop bracket and arm, bilstein 5100, superlift radius arms new all torque to 250lb. New coil spring. EVERYTHING HAS BEEN TAKEN OFF AND INSTALL 2 TIMES. Even thought it was track bar drop bracket rubbing and tried spacers. Nothing is working. It makes popping sound when I am turning wheel to left, had wife turn it and I felt the vibration on the frame by steering box. I read somewhere it could be rivets but isn't that tsb for older models 97s. Please help, took to alignment shop but they could not figure out. It's not mounts or ball joints. Have taken to 2 different shops and both gave up on finding it, they only listen though did not take anything off. I have felt the 2 tabs on frame in-between the 3 power steering box mount bolts and don't feel nothing there. I only feel a small vibration on the inside frame neat power steering box. If you look from the top it looks like it is moving just the tiny bit, can't tell if frame is moving with it. Please help. If you come up with a solution or what is loose I'll venmo/ cash app, I promise. When I jack it up it doesn't make sound.