I'm currently having trouble printing out bottle forms. Originally my setup had no issues printing out shapes with 2mm thickness. My Ultimaker Original is using Black PLA, running at 228 C with a fan speed of 128. For faster print times I reduced the thickness of the shapes to 1mm, 90 percent of the bottle printed fine until the shoulder and neck were printed. Could you please help me with the correct printing settings? If its not settings what else could be the problem. Is high quality setting the best option?