I am using 4.00mm retraction distance, 0.1mm Vertical Lift, 44.0mm/s retraction speed, and a wipe of 3mm. I have also told S3D my .4mm nozzle is .34 and that helped a lot. Extrusion multiplier is set to 0.97 From there you need to get your filament diameter as close as possible and temps and cooling...