After finding some play in the drivers side radius arm pivot I ordered a couple of repair kits from Mini Spares. The plan was to overhaul a spare arm I had stashed and do a quick swap, it was not to be as the spare arm was goosed.
Awkward shaped door stop
So the one on the car was removed and stripped and the damage assessed
Bit of wear
The bush at the other end wasn't too bad but there was slight play with the new pin so both old bearing and bush were removed with a little help from the Dremel.
I puzzled over how to fit the new bush as smacking it in with a hammer didn't seem right so I improvised and made a bush puller out of the old spindle. The new bush needs to be line reamed to size so it wont fit over the spindle but a couple of minutes with a flapper disc in the angle grinder fixed that,
Nice slide fit
You could even cut some slits in the other end (if the spindle isn't too badly worn) to act as flutes, under cut them on one side and use it as a reamer and have yourself the complete radius arm overhaul tool 
Puller in place with new bush. There's plenty of length on the spindle to get a nut and washer on either end
Ran out of thread so needed to add washers to get the bush fully home
Perfect
Next job was to ream the bush using this
First I set it so it was a push fit into the bush then adjusted the collars half a turn at a time until I was close then went to a quarter turn until the spindle fitted nicely with a nice slide fit.
Then pulled the needle roller bearing in on the other side, I even remembered to fit the grease tube.
Finished
Radius arm is now back on the car and no play at all in the pivot - very satisfying. Just got to fit the damper, handbrake cable, brake pipes and bleed through and job done.
