I just flipped my bars, and had the same issue. I ground the plastic tab off the left hand controls, and started grinding thermal tab off the right hand control. I lucked out, the metal peg heated up while I was grinding on it and it slid out. I used two sided 3M high strength automotive tape. It's thin and super tacky, used for emblems and such. One wrap around the bars held the controls firmly in place. Just make sure you have the angle you want before you put them on, or your going to have to start over again with fresh tape.