Aus das GS 500 Wiki: www.GS-500.info
As is generally known, the chain alignment has to be adapted when mounting a broader rim, and as a consequence the original chain slider doesn’t fit properly anymore.
I took a strip of polyethylene and fitted it round the rocker with the help of a heat gun.
Of course you might use any other plastic material.
Then I drilled two holes top and bottom into the slider and into the rocker in corresponding positions.
Afterwards inserted rivet nuts.
Then I counter-sank the counter-sunk screws into the polyethylene strip.
In the rear I unfortunately took the wrong measures, so I had to make and do a washer.
From underneath it looks almost the same, but unfortunately there is no picture.
Here is a picture of the curve:
