on my roadbike, i'm going to be swapping out the 53/39T to the 50/34. but my FD doesn't have any barrel adjuster on my Scott Addict.

i check youtube and found a lot of vids on how to adjust the cable then fine tune using the barrel adjuster, but for me i don't have that option.

so how to go about in doing it? any vids on how to do that?

please help.. thanks~