I have upgraded my k8200’s Z-axis and extruder. The problem I am having is with zits (extra material) where the height is changed between layers. I have changed retraction length to 4 and speed to 120 mm/s. But I am still getting the same thing. I have a couple of pics, but I am unsure how to attach them here. Can anyone offer any help to eliminating this?
http://tinypic.com/view.php?pic=2affw4k&s=9#.V8s_aDVXNv0
http://tinypic.com/view.php?pic=2enurnb&s=9#.V8tBUzVXNv1