Where is all of this additional Z capacity alloocation going to come from to accomodate 80% more international PMUs?
it's not 80% more, it's 400% more. If .2x of PMU's are being used now, and 1.0x of PMU's end up getting used in the new regime, that's five times as many overall. The increase is 400%. However, the PM allotment of SWU's is to shrink by 33%, so although the usage rate could increase by 400%, the number of seats sought would increase by some lesser amount (assuming there are many times the number of PM's as DM's).
Anyway, didn't they say the Z capacity would only be relevant for pre-clearing before departure day in the new system?