H-Shifter Guide

This is a replacement guide for the Aliexpress/Amazon H-Shifter, which has a common issue with the original guide braking. This part replaces the original and also has a better design. I added a small chamfer so it looks better, and the gears slide in more smoothly than on the original or other replacement guides found here on Maker World. There are also holes for the screws heads so it doesn't stick out. Works with original screws.

Also, it removes the 7th gear since it was a headache to hit the 5th properly with the 7th groove.