I remember reading this before I started on mine yesterday. I put mine together and laid them on the table for a nice flat surface. I then measured from the table to the lowest spot of the end of the bar on both sides and adjusted accordingly until they matched. Now I just hope like hell I have the angle right when I put them back on the bike.Love the 12s. Haven't had any time to re-route the cables. One thing, my wrist angles didn't twist all loose like vid. Then OCD kicks in trying to get angles to match. No codes or lights!