65scribe mentions in his 4400/200 video that the drive carrier (CD-ROM + Floppy) si "notoriously tricky to re-install. Here are some tips to help anyone else- Remember you have to put that sucker back in after the motherboard, so you can't want to muck it up. I practiced a few times and thought it might be helpful to share these, so no one is scratching their heads as to why the carrier won't slide back into place.
1) Take the front bezel off. Seriously, it makes finessing the drives through the chassis much easier.
2) Get the drives under the springs. Angle it downward as you place it in, not parallel to the case floor. There are two sets of these springs: one over the CD-ROM (easy) and one over the floppy (****). Also align the CD-ROM side "foot" with the groove and notched section. Be careful of the floppy side "foot" so it doesn't scrape the motherboard.
3) Make sure the actual carrier (not the second bay front metal plate piece) is over the lip of the chassis (this one stumped me a bit) It also helps to apply light thumb pressure to the chassis to let the carrier slide smoothly into place on each side. Arrow marks on the CD-ROM side tell you when you're all the way in. You shouldn't have to force this at all. Once you've cleared the chassis and aligned the floppy-side mounting screws with the plastic channels atop the speaker/fan shroud, it will slide in.
4) If you care about the condition of the fan/speaker shroud, place some parchment or other paper underneath. The sharp metal with scrape the plastic like this otherwise:
1) Take the front bezel off. Seriously, it makes finessing the drives through the chassis much easier.
2) Get the drives under the springs. Angle it downward as you place it in, not parallel to the case floor. There are two sets of these springs: one over the CD-ROM (easy) and one over the floppy (****). Also align the CD-ROM side "foot" with the groove and notched section. Be careful of the floppy side "foot" so it doesn't scrape the motherboard.
3) Make sure the actual carrier (not the second bay front metal plate piece) is over the lip of the chassis (this one stumped me a bit) It also helps to apply light thumb pressure to the chassis to let the carrier slide smoothly into place on each side. Arrow marks on the CD-ROM side tell you when you're all the way in. You shouldn't have to force this at all. Once you've cleared the chassis and aligned the floppy-side mounting screws with the plastic channels atop the speaker/fan shroud, it will slide in.
4) If you care about the condition of the fan/speaker shroud, place some parchment or other paper underneath. The sharp metal with scrape the plastic like this otherwise:

