I have a 2011 f250 fx4, brand new Hercules terra trac at ii 305/55r20, brand new Monroe shocks front and rear, and a rough country n2.0 dual stealing stabilizer. The problem is I get a hard bounce in the front end when even going over minor bumps, it happens on speed bumps going 5-10mph and on the hwy goin 55-75. It feels like I'm slamming into the axle. I've seen videos on the "death wobble" and I've never experienced loss of control like that, it's just a really hard bounce. I had a 01 f250 7.3l 4x4 Crew cab and never had an issue like this. When I had the suspension,tires, and stabilizer installed I was told that would fix the problem but it hasn't, any ideas? Bad springs?