Sadly, my 1040STf was one of the very early ones that had a single-sided drive, and the replacement drive I ended up with to be able to use double-sided disks n

Sadly, my 1040STf was one of the very early ones that had a single-sided drive, and the replacement drive I ended up with to be able to use double-sided disks never properly fitted inside the case, so the 1040ST had to spend it's life with half of the case removed. I wish I still had it though.