Was the buggy purchased new? I ask because the stock shocks on the 48.3 can easily go well past those Lutz setup numbers with the set screws for droop screwed all the way in.

If you built the kit from new, than you have some kind of build problem with either the set screws in the a-arms or a build problem with the shocks. Take a front and a rear shock off the mounts and measure their length fully extended, you should have something well past the 119.5 and 134.5 that Lutz has on the setup sheet, I do not recall the shock length and not going to remove to find out. If the shocks are not that long than you have a shock package from another kit.

The only other area to check is how you threaded the set screws into the a-arms. See that you have the set screw pulled all the way up giving the most amount of droop, see if anything is obstructing the movement of the a-arms.

Report back..