I replaced the basin spindle with a 1/4 turn spindle. Everything works but when I screw the flange onto the locking nut the flange does not screw down far enough to reach the basin. The length of thread on the locking nut is longer than the thread on the old washer spindle. I used a Shaw and Mason 1/4 turn basin spindle. Is there an alternate locking nut that has a shorter thread for the flange?