distributor shaft play

for the lower shaft axial play: drive out the pin/remove the slip on collar and add flat washers to reduce the end play to .005" . Speedway mtrs has a kit of washers of diff thicknesses for this for cheap or source your own just make sure they are flat with no "edge" on the one side of the ID/OD like most are when "stamped" & if so (barely) chamfer it off & the OD of your selections can be quite a bit larger than the plastic collar as there is plenty of room in that area, nothing to interfere. EDIT the shaft is 1/2" OD