Roadking,
You might want to save some brain cells and wait till the vote count on Dec 7th before trying to learn too much detail about the current reserve schedule. If the tentative agreement is ratified, which it probably will be, this reserve schedule and all it's intricacies go away. There would be three schedules available for bidding under the amended contract: the old 7&7, a 15-day flex and an 18-day fixed.
-NTFB