I'm sorry you're having issues with the tiles Piecewise. Cecil, the creator of Hex Kit, specifically made the import files so these tiles would work in Hex Kit. From my instructions, if you import the files without adjusting them (even though they look like they're off center), they'll work fine in Hex Kit. The main reason they look off center is because the image file is not the shape of a hex- it has additional room above it (for overlapping tiles, like with tall mountains that go over the hex border.) Try reimporting them without adjusting them and let me know if you have any additional issues.