Unfortunately, some tiles are even larger. On the first image, check the widths of the tiles. One of the corner tiles is 2 pixels larger than that.
That's due to the padding done when tiling the sides, in which tiled sides are extended out into the outline area, so there becomes a 1 pixel overlap of the tiles when they are put side by side. It should be fairly harmless, but it could be removed.
It throws me off when I attempt to clean the images in Piskel (which does not support tile padding).
Thanks. I got the larger of the two images set up properly in tiled. Getting the autotiles set up.