Sorry for the delayed response. This helps a ton! I've never 3D printed anything before, so forgive me if this is a dumb question, but what "configuration" should I go with for the hinge supports? Is the default FFF technology with 17% infill, > 0.2 mm layer thickness in gray ABS OK? Or should I increase the infill to 100%?I used https://printathing.com/ when I got a 3D-printed hinge support made for my 170. I used an STI file from thingiverse (actually https://www.thingiverse.com/thing:4391026) at about $9 apiece, plus postage, in ABS. It was reasonably quick service too.
I think I'll pass on servicing the floppy drive ... for now. I agree, the flap probably helps prevent a lot of issues found on always exposed drives such as those found on the desktops.They come apart easily enough, but I personally haven't had the need to refurbish any... perhaps I should? I haven't personally experienced any gummy lubricant or eject issues, and the flap on the front tends to keep anything nasty out.