All the files that I found for GT2 belts i could not print with a .5mm nozzle. THe slicers would make the teeth way to small and flemsy. Looking at a couple of other files from RP_one_Labs and Twelvepro i noticed when I printed those they would come out fine. So I opened up ole trusty netfab and started doing some measuring and found that the teeth and the grooves were 1mm wide, and in the github file they were .25 and 1.75 (if my memory serves me correct). SO i started messing around with the .scad file and came up with this. It slices fine on Kisslicer with .252 layers and .7 extrusion width. So hoepfully this helps someone else. FYI I kind of chopped up the file because the configuration.scad file would not load, so I just added it into it.