Hi,
yet another version (see attached).
Note that this seems to be a perfect example of the only exception when you should not work in scale 1:1. SU tends to "miss" some small faces when already working in millimetres (1/16 inches). This is especially true when using the follow me and intersect tools (they would end up with really small faces sometimes).
Also, the follow me tool has some glitches when following arcs (it tends to draw/create the faces perpendicular to the arc and therefore leaving you with some overextruded shapes).
cl_shelf_G.skp