So I actually went to replace my optical drive tonight, and that looks to have gone smoothly. As far as the keyboard, I cannot, CANNOT get it back on to save my life. My heart sinks every time I think I get it to work only to be discouraged when the left side pops out when I try to close it. It holds fairly well on the right side where the optical drive is (I suppose because of those four little plastic bits that are lodged there) but it doesn't hold at all on the left. As far as I know there aren't any plastic pieces that fall out on that side. I really don't know what to do at this point because I feel like I've tried everything. Does anyone have any experience with replacing Macbook keyboards, and if you do could you tell me what I could possibly be doing wrong?