I worked in the tower for a while, though I can't remember the exact arrival rate for 06/24 it was certainly less as we had to cater for the Heavies to backtrack and vacate at J1 or 03/21 (if that option was available) or back track to C1/S. Ditto for them to line up. I am pretty sure after the resurfacing closure W was pretty well buggered from the heavies, so I don't know if they can/are using it again.