It is possible that there was a little air in the system. The correct bleeding procedure is turning the steering wheel lock to lock several times. Flushing and bleeding may have changed this slightly. It also could be your imagination, I sometimes get into this myself.

If it is overfull, just siphon a little of the fluid off. It should not be above the white plastic piece around the center of the stud that the lid fits over.

Good luck,