when ever i am printing a part weather it has overhangs or not the very edges of the print ( on the top layer ) curl upwards and i am printing in PLA. see here i am printing a standing man but his arms are curling way up above the extruder: https://www.dropbox.com/s/bwnj1a8laa...%2027%20PM.jpg and https://www.dropbox.com/s/8mgwhip69w...%2032%20PM.jpg

any help would be nice thanks!