The shop only had one red brifter haha! but I will definitely write SRAM
I mean. Brifters are sold as a set. You couldn't even buy ONE from Sram if you wanted, you'd have to goto a dealer and convince them. Be sure that you have the shops info and the dates. Call/write them and just be a roadie. Say something like you bought a set, and it malfunctioned, but you'd either like a matching force set, or the other red brifter to go with the one you have. I dunno... whine but be smart. I'd expect to get another brifter. Then you can sell your old brifter to some hipster on ebay looking for a front brake lever for his sweet fixay.
omg. punch me in the face. please.