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What's the best way to program this part so the top surface comes out smoother? I've tried concentric and linear, but top surface has gapps and even a small hole on every layer (there is a .04 hole, but one about .02 not wanted). Used Slicer. More overlap perhaps?
https://www.dropbox.com/s/zzdu1sz4r563h ... 1.jpg?dl=0

This is a clip to clip small wire solar light string to an awning. About 1.5" long.

I'm not much for troubleshooting finishes, but I'd guess going slower and/or reducing retracts. Looks like (but I'm not expert) the nozzle lifts and punches the layer a bunch to fill in the center.

Unrelated, I like to set the top/bottom fill to be concentric to look "neat", it's a setting in cura 2.x, not sure about earlier versions or other slicers.

Personally I'd just try another slicer, maybe Cura or Kisslicer.