I was never happy with the SA's road behaviour at the rear end so I decided to take the swingarm out and have a look at it.
The rubber bushes were worn as one might expect, but I found the swingarm wasn't all that good either.
It had worn by about 3-4 mm at the left, which explained why the left arm was rubbing against the brake pedal spring.
I decided to mill the opposite side down to have both sides of the same length so the swingarm would be centred in the frame again.
I then turned a couple of bronze bushes with a 4 mm shoulder and two polished steel inner bushes to a tight fit over the hollow spindle and line reamed the bronze bushes to a 0.003" tolerance . I had made the inner bushes so that they stuck out by about 0,3mm both sides for them to clamp between the frame.
A grease nipple finished it off.
This completely transformed road holding. From a wobbly back end to driving on rails.