Ok, so i’ve got a Sora front triple set up on my Planet X London Road. When i change gear from the big ring to the middle ring I have to push the lever 2 clicks, you would think that this would put the chain on the granny ring but there is another click left for that. The limits are set correctly and I can change into big and granny fine but the middle ring seems to have 2 positions.

Has anyone had this before and do you know if my shifter is knackered? I’ve had it for a couple of years, but it’s always done it…..

Trim function, to help stop chain rub when using the full width of the cassette when in the middle ring.

Ah, so it’s it supposed to do it then? Fair enough, cheers.