Spoke too soon. The rear brake works fine when I apply the Cross Creek lever but when I apply and release the Dia-Compe aero lever the caliper only partially returns to the open position and the pads rub the rim slightly. If I then apply the Cross Cross lever the caliper returns to it's normal full open position with about 1/8" between the pads and rim. So there must be some difference in the cable/housing when I use the regular aero lever versus the Cross Creek lever.