I guess my question would be, is your panel a 1/2 Ton? There were 1 Ton panels too. The 1/2 Ton bushing were a "floating bushing and they would have a groove around the outside surace to allow grease to enter.
If you have an wiggle at all between the pin and the axle, you will need to correct it. Any play will cause wear in the hole. The .010" kingpins are made for this problem and the axle would need to be reamed to fit.
