I'd like to see your power file showing 9 kJ of work done in a one hour crit, let alone 9 kJ *difference* in work done at the end on a one hour crit after changing to heavier wheels. You realize that 9 kJ of work in 1 hour is almost equal to saying you burned 9000 calories in an hour.

and when I said 2ish total, I meant for the whole race, not the difference between the two wheelsets!