well news breaks all trends, but w/o a PR they have 13 days to clear out the fails-to-deliver, but every day that ticks by will likely raise the pps (their risk greatly increases at least), so they're going to want to do it asap imo
EDIT: I misread the regulation, it doesn't say "within" 13 days, it says that they must "close-out all failures to deliver that exist in threshold securities for thirteen consecutive settlement days".
that's a hell of a lot more pressure, this should resolve rather quickly. good.