I just installed a new set of Speedplay Light Actions. The directions for attaching the cleats to my shoes were adamant that the mounting screws should not be too tight or else the cleats won't clip in properly. The problem is that I've got them at a point where I can clip in and out, but the entire clip mechanism (not the mounting bracket) slides left to right with very little effort. Is this correct? It doesn't seem right, but I don't want to tighten the screws too much and mess the whole thing up.