the main tricks of the level(s) is the building inside a digger hole. If that is preserved it's okay by me.
Initially I think what I was going for was something along the lines of ccx's solution to the original level which looked something like this;

 builder bricks: -
terrain: =

           -
         -
       -
     -
   -
 -
====      =========
====      ========
====   --========
====     ========
====     =========

so the lix will fall into the digger pit then turn around on a tiny builder ledge inside. But I don't remember if this was able to actually be preserved in the final level as this went through many revisions and backroute fixing.