Perhaps they used better disks on your run. LOL. Actually the first time I ran the check it showed several more errors. I cleaned the heads and ran the disk a few more times and when I copied it, it copied without any errors. Hopefully the copies work. They appear to but I need to hook my 128 up.
My 64 Write stuff disks are not yellow and they are not noisy. Usually when a disk is noisy it means the liner is bad or dried out or something. Certain brands of disks even back in the day had somewhat noisy disks like Nashua.
Hopefully they work.