I had a hard time putting these screws back in with the HDD bracket. It looks like the bracket doesn't leave room for the bolt heads, so they go in at an angle. I tried for a while getting them lined up just right, but eventually gave up and now I'm pretty sure those T6 are cross-threaded into the aluminium. =( The original optical bay does have room for the bolt heads so they stay vertical.
I had a hard time putting these screws back in with the HDD bracket. It looks like the bracket doesn't leave room for the bolt heads, so they go in at an angle. I tried for a while getting them lined up just right, but eventually gave up and now I'm pretty sure those T6 are cross-threaded into the aluminium. =( The original optical bay does have room for the bolt heads so they stay vertical.