Fitting bushings to W21-03 Upper Angle, W21-04 Lower Angle, W21-06 Upper Angle, W21-07 Lower Angle. Put a flat head screw through the bushings, with nut and washer on the bottom, chuck in drill press, then with a file trim down O.D. until it was about .005" larger than the holes in the angles. Used bearing press to push bushings into angles.
