I'll bet lots of people "tolerate" a few glitches in multiple disk sets, so the producers and retailers don't need to cater to a very large finicky public, and won't bother to make it easy for us. :frowning:
I share that worry about long sets. Add the "its for a Christmas gift" to the problem, the set may not be looked at for months :frowning: There definitely should be a way to replace individual disks.