Logi G-502 Mouse Middle Button Tilt - One Detected, Other Not

Hi. Using the Logitech G-502 gaming mouse for productivity with macOS. Although Logitech's software for this is quite decent, I'm trying to map out some stuff with BTT. When I go to program the middle mouse button tilting right and left as forward and back, respectively, I get the following result:

  • Middle wheel tilt left (for back) is recognized as Button 10.

  • Middle wheel tilt right (for forward) is not recognized. Nothing registers for it.

Has anyone had a similar experience and/or can advise me on how to deal with this annoying situation? I'd greatly appreciate it. Thanks.