1974 Dodge Dart lower balljoint rubbing???

Hello all,
My father-in-law and I are restoring a ‘74 A body dart sport with 3.7 slant 6. I am in the process of replacing all suspension bushings and ball joints. So far I have replaced everything on the driver side and I have run into an issue where the spindle is rubbing against the balljoint nut and threads at full droop?!?!? This is causing severe binding. It’s only at full droop. Does anyone have any recommendations?