I pulled 2 of my M77MKIIVT's out of their stocks yesterday, and I can't get them put back together correctly. I tightened up the 3 screws on the bottom, but I can't get the floorplate to latch completely. Am I missing something here? What order am I supposed to tighten the screws down to, and is there a specific torque? That's the only thing that I can imagine that is causing my problem??