Andy that is a nice looking website. The trademark Battle Systems is dangerously/amazingly close to an old TSR trademark "Battlesystem" which was a fantasy skirmish / mass battles game. Difference of one space character plus a lower-case 's'.
I hope WotC/Hasbro doesn't mind or has abandoned it? I won't tell them.
I will take a hard look at the instructions when I have a chance, but I pulled one open at random and this jumped out:
"...The image below shows the pieces in our kit, with red lines showing the edges that needs bevelling and yellow lines showing where we suggest that you apply glue."
needs --s/b--> need