I am a new and very happy owner of a Terratrike Cruiser. Like any new machine I go over it tooth and nail. One minor thing I did notice was the LH kingpin had a little more clearance than it should have. I purchased brass shim stock, and made a .005 washer that I put on the bottom of the kingpin bearing. This eliminated a small knocking noise when going over some bumps. Was this necessary, not really. But as a life long technician, I like things as perfect as possible.