Bottom Fill Layer Overlap Issue  

Bottom Fill Layer Overlap Issue

Hello, I have run into a bit of a snag and any help would be greatly apricated!  So, I am printing with a 1mm nozzle with an ender 3 using prusaslicer as the slicer obviously...  I am having an issue where my bottom fill layer is over extruding so that there is too big of an overlap between the lines.  I looked through the gcode file and my extrusion width for my perimeters is 1.5, but my extrusion width for my bottom fill layer is something like 1.68.... (this was under comments, not something I can adjust in the gcode)

Is there a way I can change the extrusion width of JUST the bottom fill so that I can reduce the overlap?  I tried changing the "Extrusion Width-> First Layer and Solid Infill" to a smaller value, but that changes both the perimeter and the bottom fill.  The perimeter is perfect the way it is and I don't want that to change when I change the bottom fill. 

Another bonus question would be, is there a way to reduce/increase the layer height of the bottom fill but leave the perimeter layer height alone (This would be nice to do in the slicer, but I can edit the gcode to do this more or less).

Thank you guys!