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Has anyone else experienced a problem with the printer randomly performing a large retraction at the beginning of a print? I need to figure this out since I am using an E3D print head and it clogs with long retractions.
The retraction occurs while the print head is moving to the bed to start the print. The extruder retracts about 3" of filament. Which is disastrous with my print head. I haven't been able to recreate the issue and it seems to occur randomly.
I think it might be in the firmware. Since it happens off and on with the same G code.
Any ideas/suggestions?

This can happen if there isn't a G92 E0 near the start of the GCode. Most of us run absolute positioning and if you don't reset the position, the extruder will retract to the 0 point (when it turned on).

I do see a G92 E0 in my G code. This is what it looks like. (I'm using Slicer by the way). Bummer I was hoping this would be an easy fix.

G90 ; use absolute coordinates
G92 E0