When MMP produced Starter Kit 1 they decided to use the same naming system for the SK boards as the Deluxe boards - a lowercase letter. At the time there were only eight Deluxe boards: a - h originally published in Streets of Fire and Hedgerow Hell. Then, MMP put four new Deluxe boards (i - l) in Winter Offensive Bonus Pack #9. Now, MMP have released SK Expansion Pack #2 with two new SK boards (k, l). As a result, the board identifiers overlap. Playing FTF this is not a problem. On VASL, this is a problem.