Travellings outside perimeter

I´m printing a part that is like a pipe with nose. When the extruder starts to print the nose travels outside the perimeter and because oozing the printing is ruined. I have tried with seam position (nearest, random and aligned) but slic3r persists in travelling outside perimeter with no needing. I have switched to Cura and the part prints good because there is no such travelling.

What can I change in slic3r to eliminate these travellings?

Edited 2 time(s). Last edit at 10/13/2016 06:49AM by sliceheart.

Perhaps rather reduce the ooze by increasing the retraction distance and/or speed, and also increase the non-printing move speed. Ticking "avoid crossing perimeters" may also help.

Dave

Edited 1 time(s). Last edit at 10/13/2016 07:40AM by dmould.