Originally Posted by
Camilo
Based on my own experience, you can chase adjustments around on the FD. I would recommend that you consider a full "fresh" installation if/when you feel it's not working right: remove the chain and cable then follow the manufacturer's or Park Tool instructions from Step A, not skipping any steps even if you feel you can. Height, alignment, limit screws without the cable attached, then attach the cable and get it to shift to both chainwheels without the chain and observe the limits - then see how it works pedaling with the chain and tweak accordingly. It's really an easy mechanism, but you can get messed up by trying to adjust something when really it's something else that's needed. Once you've got a good idea of the A-Z of installing and adjusting, you can better home in on what needs to be done.
How about the trimming? How do you go about setting this? Some vids say no need to set or adjust it. Manual said if you try and test the trim and it instead shifts fully to the lower chainring, you adjust the h limit counter-clockwise by 1/8 turn.