I made simple mod for SHH shifter to use with sequential mode. It contains 2 parts:
-the frame which you can screw to your shifter with original screws
-and the plate that snaps to the plate with magnets.
You would need 8 cylinder shaped neodymium magnets with diagonal smaller than 4.5mm and height smaller than 1.4mm. First you need to glue in the magnets mid-print to the plate (you need to pause print to glue them with superglue or something or they will snap to your 3d printer nozzle or heatblock). Than when you have both parts printed, put them together and glue magnets to the frame. This way you don't need to think too much about polarity of the magnets.
The author marked this model as their own original creation.