The bike that keeps on giving...
...me additional small things to fix.
I took the R100s for a short spin on Saturday, after I replaced this connector, and noticed some chatter and knocking from the right lower side of the front fork. Upon inspection on the hoist I noticed this small gasket ring to be wedged between the damper rod and the outer tube. I have no clue how it got there, but the damper rod was loose as well.
Fixed now and ready to roll again and see what this 41-year old bike will present me with next ;-)