"you’re the expert here, right?"
:smileyvery-happy: Hardly, but thanks for thinking so. 
The initial format is a super floppy format; no MBR, no partition table, is FAT32 and a cluster size that I don’t know. It probably varies depending on the size of the flash drive. I know of no app/utility that will recreate that format. That doesn’t mean one doesn’t exist, just that I don’t know of one.
If you have an app/utility/way to format the drive with different cluster sizes try formating it with different sizes and see if ones are better than others for you.
