My series 21,doesn't have bushings there,so I looked at earlier series,this illustration,is for series 4&5,this is why you really need to identify the series of your RER. I'm glad to get the info myself,if mine develops "slack" there,I will know there's a bushing ti use.

P.S. I have had mine for 14 years,I've learned a lot working on it,and on this forum.

P.S. I have had mine for 14 years,I've learned a lot working on it,and on this forum.