Hi! I have a myDigital Protoboard. I am teaching digital electronics to high school students, so we are just getting into building fairly simple circuits using AOI logic. On one of my boards, if I place a chip in a certain position along the trough, I have to hold it down for it to work. It works fine above and below that area, but in one area it is loose. And I can tell a difference when I place it in that area because it doesn't "click" in like it does in the other areas. Is there a fix for this or is the board broken?