Sorry this has taken so long guys. Long range of computer troubles I have been having.
Thanks to a person who would rather remain nameless for helping me with this! You seriously have my heart right now. :P
he only issue is that there's a small gap when you place them around an outer corner...But you can cover it up it by using "move_objects on" and "boolprop snapobjectstogrid false" to position an extra tile to fill in the gaps.
The mesh is included here as lots of people (including moi) are having serious troubles with MTS2 these days.
Again I am SO sorry to everyone that this has taken so long.