I have a slitter and planned to slit the aerial film for smaller Cirkut sizes, and then use the cutoff to respool 120, but I just can't build any confidence that I can make the slitter function well enough to trust using it in the dark. I didn't want to risk trashing perfectly good film.
It is a shame to see 120 becoming such an issue, but TX is amazing stuff and still available. I know it is a different speed, but that is what I personally would use to replace PX (if I didn't have a stockpile of Verichrome Pan). The modern Tri-X is amazingly fine grain, too.