G'Day Bill,
In the past we've just taken our o/b props to the nearest
propeller shop and had them press in a new bushing. It isn't something easily done at home... requires a big press and a special "funnel" to compress the rubber bushing as it is shoved into the hub.
Sometimes the prop cracks while pressing out the old bushing, so be warned!
Cheers,
Jim and Ann s/v Insatiable II lying Lake Macquarie, NSW, Oz