Hey! I answered your email.
Some of the hex map editors expect tiles to have certain aspect ratios.
You can use Tile Builder to trim and replace the border for all tiles at once.
Script for trimming borderless tiles:
set_type = tile script
set_canvas_size = (628, 726)
set_ground_position = (0, 0)
set_element_offset = (-106, -57)
build_tile
Script for trimming borderless tiles and also replacing the border:
set_type = tile script
set_border_identifier = "Isle of Lore 2\pointy.border_medium.dark\border_medium_0"
set_canvas_size = (688, 795)
set_ground_position = (30, 34)
set_element_offset = (-76, -18)
build_tile
Hope that helps!