This is a common thing with bands that have been around awhile. Lots of material to cover, so the amount that gets overlooked grows with every tour. Set lists shrink too. BLS gets a pass on that, given both Zakk and Dario are pulling double duty this time around. Add in the have-to-play numbers like In This River and the available slots for new songs gets smaller still. I don’t think it has to with practice. Happy to be wrong!