I noticed when hitched up with the 5th wheel the truck looks nose high, but the scales show the nose is spot on. As I stand and look at the truck it looks like the front is higher than it should be, so measured and sure enough, all 4 wheel wells are 41" tall. I don't see anything that would lift the front like a large rubber extension on the springs, so what should I look for? Smaller rear shackles? What should stock wheel well height be on a 2012 F350 4WD KR Diesel?