Items required to have a smooth roller on the Dillon XL750 reloader. Parts can be sourced from McMaster-Carr Ultra-Low-Profile Precision Shoulder Screw, 3/16" Shoulder Diameter, 3/16" Shoulder Length, 8-32 Thread Size 90318A680Stainless Steel Ball Bearing, Shielded with Extended Inner Ring, Number R3-2Z Part number 57155k385Parts for top plate