I was changing the cable and either, I don't know what I'm doing, or I took apart too many things to get the cable out. I got the cable out, but I lost one of the screws that holds the brake lever to the black shifter. Does anyone know if one can buy spare parts, or am I SOL and need to buy a new brifter. They are the Tiagra flight deck ones. I really like them and would hate to have to buy a new brifter for the place of a screw.

Also does anyone know of a schematic drawing of the brifter so that I can see where the parts go as I rebuild this.

Also, for the left side is there a an easier way to take out the cable with almost completely taking apart the brifter.

Thanks.