We have experienced the exact same issues with our Springs. I agree, the Lippert springs are certainly under-engineered for the size of the trailer. I have changed out the springs on my Bighorn to a 6-leaf set of springs and replaced the tires as they had worn unevenly. I would never have expected to replace the Springs on a near new trailer (2009 - 3410 RE Bighorn). I love our trailer and fully accept that there will always be some maintenance issues, but HL needs to review the suspension system they currently install on their trailers. Poor quality engineering reflects badly on a product that I have been very happy to support to others.