Home Renovations XIV: The Doorening

Last night, the sliding door (in front of my shelves of shortboxes of comics) popped off when I was sliding it open. I had noticed that it had gotten a bit “sticky” lately, but hadn’t really investigated. And… this turned out to be the problem: Those “rails” at the bottom slid out. Like WTF. And it turns out that they’re only fastened with double sided tape! Like… wat? I mean, there’s not supposed to be much pressure in an outwards direction, so you could see how that would work OK… But look — this (aluminium, I guess) metal profile thing is so “hollowed out” that it only has these three narrow strips that make contact with the floor, anyway, so there isn’t that much surface to glue? I was wondering whether I could drill a hole in the middle and fasten it with a screw, but: Even the middle bit isn’t solid! Geez. So if I wanted to fasten it to the floor with a screw, I would have to drill either to the left and right of it, and then either use washers to fill in the gap (but that would…