1. Well, I had Infill set to 33%, but Skin Thickness = 3x Extrusion Width and Loops = 3. Since 3 times around completed the wall I'm thinking I should have a 100% solid wall.
2. The part is hollow with the base set to z=0. If I tilt the part I will run into other quality finish issues.
3. Regarding Seam I noticed the Seam starts at one edge of the 45 degree slope so I was wondering if it started on the other side of the spout where the slope is less than 45 degrees maybe that would help. Regarding the Pillar I wondered if it might help to start off the extrusion a little better on the overhang. All of this is in the context that since I'm not 100% sure how overhangs work, I was wondering if maybe the extrusion starts off bad then it's hard to catch up on an overhang...anyway just some thoughts because I'm looking for ideas.