TH8A / TH8RS Sequential Shifter mod

A mod I made that brings the TH8RS shifter sequential mode into completely new level.

More details in the video: https://youtu.be/ftoNNL1reJ8

NOTE: after using the mod quite intensively I found a major flaw in the design – the friction between shifter shaft and the spring ball screws is resulting in occasional locking of the shifter and scratches on the shaft. You could use some kind of grease to prevent that but it would make the whole thing messy, so I inverted the design: springs are on the top and ball screws right over the base plate. At this height the shaft has a teflon insert therefore the friction is minimised and everything works smoothly.

Parts list:
3D models
4x M3 25mm screws
4x M3 nuts
2x M4 nuts
2x M4 screws (around 15mm long)
4x M610mm Spring Ball Plunger screws (https://tinyurl.com/w6wjjx2)
2x Springs for 3d printer bed: 20mm 7.5mm * 1.2mm (https://tinyurl.com/s4sbl6c)