weird print issue...need some help

[nefiwashere]

i have a makerfarm i3v 10" so far i have printed out some stuff with very good results except for one part. it only happens on one corner of the print where it adds to much filament. as the print progresses the hot end with start to drag through the print. attache 2 pics show the bad and one showing the good. both pics are of the same part just different ends, i have changed the orientation of the print on the bed and it still does it on that corner. i have used slic3r and cura, same issue.

any help is appreciated


HelmetRightBottom.stl



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