I installed the two parts
- shift outer cap with long tongue, and
- rubber shield
as shown below, but I'm not absolutely sure this is right.
If I put the rubber shield (the one on the right in the picture) behind the cable stop (i.e. to the left of the cable stop in the image — wedged between the cable stop and the shift outer cap with long tongue), the length of the Bowden cable sheathing (cover) will effectively change, depending on how much tension is carried in the inner cable — and that tension is different for each gear.
This "changing of length" would be a lousy setup for a proper tune-up of shifting. Hence the rubber part must be on the right of the cable stop (as it is above), but then nothing holds it in place, and I'm sure it'll soon start floating to the right. Keeping an eye on a "moving part" that shouldn't be moving during every stop would not make for worry-free riding.
Can you comment?