Wolverine ultimate and keyboard mapping problem

I too am in the same boat as you and was looking here as a potential support mechanism, however it appears your comment is a month old with no response so it doesn't look good. Apparently the problem is the controller itself and technically it isn't possible at the moment because of how the controller sends the button presses to the computer. It sends the extra "M" buttons as the exact same button as the one it's mapped to. This is different from the Xbox Elite controllers however, which send their extra buttons as separate buttons, which allows you to use third party software (such as Rewasd) to remap them separately to PC keys. It's devastating because this controller is amazing and is missing out on a huge PC audience here. I think I'm going to have to return it which is sad. I'm currently in the process of getting in touch with multiple support people to try and work out if it's in their roadmap for an update to the controller firmware to allow the functionality.