i played with Slic3r config and it seems i found a better configuration. Here is the result of the last printed object from Thnigiverse with this config. FullSizeRender (2).jpg FullSizeRender (3).jpg
As you can seen compared to the previous one it is far better !! FullSizeRender (4).jpg

Let me know if you want the ini config file of Slic3r v1.2.9