Rome 390s on a Burton Board
I just bought some new Rome 390s from sierrasnowboard.com for by Burton Blunt which uses the 3-hole system. The plate from the Rome 390s don't seem to fit on my board. On the instructions for the 390s it talks about a convert disc that's supposed to fit both the 3-hole system as well as the 4-hole system. Was this supposed to come with it? If not, where can I get it?