Arduino Materia 101 - Low profile glass plate clips

After adding the extruder fan duct to my Arduino Materia 101 (see http://www.thingiverse.com/thing:867746), I felt the need to replace the clips that came with my printer with clips having a lower profile, in order not to interfere with the extruder or the fan duct in large prints.

The clips are sized for a glass plate with blue painter's tape going round the sides and the bottom, so the thickness is:
glass thickness + ( 2 * tape thickness)

If you don't use tape, or if you apply tape dif