When Slic3r produces support material, most of the 'blocks' of support gcode start with a pair of extrusion moves which try to put filament in the same space.
Is there any likelihood this has a purpose?
( I had a problem viewing the support in Repetier host, and he located this issue )
Move to X1,Y1
Extrude to X2,Y2
Extrude back to X1,Y1
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G1 X66.939 Y98.450 F6000.000 ; move to first support material point
G1 F600.000 E1.00000 ; compensate retraction
G1 X66.939 Y99.401 F1584.000 E1.01941 ; support material
G1 X66.939 Y98.450 E1.03883 ; support material
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