spreader movement

[berwick]

I have a 1979 Tartan 37 and the spreaders have a small amount of play fore and aft. The play is between the metal from the mast and the aluminum spreaders. The spreaders are held on with a pin vertically through both parts. Should it be bar tight with no movement? If so what is a fix - ream out the metal and put in a bigger pin or use a nut and bolt?
Thanks, Richard