Hypershift not working on Naga

Hi. Im playing the Oblivion remaster and want to use the hypershift function. I want to set my normal macros, then press the MMB to activate hypershift so i can use 1-8 to change my weapons. This does not work. And now the mouse is acting like its stuck in hypershift and the normal macros arent working. To clarify, i changed Button 1 to left shift (sprint) and button 12 to left ctrl (sneak). Seemed to work fine. Then i changed MMB to hypershift and left the macros stock so i can press it and have 1-8 to change my weapons then release hypershift and go back to my normal macros. But now without pressing the hypershift button (MMB), its using the hypershift button setup. Anyone know whats up with this?