WCA Don't get sweary, get even! Ha ha. Bit of a fiddle but what I did once was find a piece of tube slightly larger than the bush inside, lube it well put the bush in and then place over the eye in the arm. Then with a tensile bolt or decent studding through the middle and a washer just small enough to pass through the piece of tube and a big washer the other end jus wound it down gently till it went in. Bit of a pain, but thats the sort of issue we have to deal with where I work very regularly because half the Dealer special tools are not far from Heath Robinsons finest,
I put both the bush and the rod (that you need to fit the bush into) into boiling hot water and let it soak for a while, then some lubrication smeared around (soapy water seems ok to me) and all mine have slid in first go.