My fettling today was replacing the thumb control on my Rose/Bosch ebike.
It's been acting up a bit recently, possibly not helped by me dropping the bike on ice last month.
The screws in the pic are ludicrously small and very fiddly to fit where they screw in under the main display.
Quite pleased to have managed the job.
The new control came with four screws, so I had eight to play with.
Just as well, as I dropped two never to be seen again.
The little red oblong is a gasket which is about the thickness of a thread of cotton.
Fortunately, the existing gasket stayed in place - I doubt I could have managed to replace it.
The fixing under the main display doesn't get a lot of weather, maybe a bit of dust, so reusing the gasket shouldn't be a problem.