To say that that I am horrified by the number of errors that I have made with these charts is putting it mildly and you all have my abject apologies. I have taken steps to put an end to them. I hope!
This error stems from extra stitches that I have in the diagram for 3D. If you stitch it as I have graphed it, then it doesn't work where it meets 3F.If you have already stitched 3D, then use the attached diagram for 3F. If you haven't already stitched 3D, use the attached diagram for 3D and the original diagram for 3F. The stitches shown at the ends of the 3F diagram show the adjoining stitches.