Are you saying there is more rolling resistance with that wheelset? Somehow the same amount of pedaling force doesnt get you as far or something while coasting? Are the tires low? Are they completely different tread? How do they spin with the bike up in a stand or just upside down? Perhaps the grease is too thick and they spin slower and for a shorter time when youre not riding it, just watching it spin free? You gotta explain a bit more...