I have test printed a 20mm cube, and the sides and top are incomplete, but the base is ok;


I have increased the extrusion multiplier from 1 to 1.25, which helped.
I have also made these other changes to see if they would help, but i cant tell any difference;
Extrusion Width → Top Solid Infill 0.45 to 0.8
vert shells 3 → 6
horiz shells 3 → 6
Default extrusion width→ 0.3 to 0.4

Are people having success with ABS using Geeetech's slicer settings from;
http://www.geeetech.com/wiki/images/4/4 ... config.zip
And if you had the change them, what did you do?