Hi, I'm new around here so go easy on me. I just bought a 2007 Brookside 289 FWRLS and I'm pulling it with a 2011 F-350 4x4 crew cab short bed with a Pull right supper slide 5th. wheel hitch. My problem is when I'm hocked up the trailer sets 5" lower in the back so I'm not even close to level and there for have very little clearance between truck bed rail and trailer. I'm thinking of installing 3-4" spacer blocks between my Lippert 5200 LBS axles and leaf springs. Any thoughts? Is this a bad idea, or am I on the right track. Thanks