I am installing the speedball but I am confused by the instructions. For mounting the heat sinks to the board it says on page 25 "snap the post of the heat sink into the corresponding holes. In my installation I soldered them to the board already but I noticed there is a tiny gap between the actual circuit board and the heat sink. Was I supposed to force the heat sink into the board and it would "click" into place, or is it mounted essentially a millimeter above the board fine? Thanks!