Ender 3 CR20 Belt clearance upgrade

This is a modification that lowers the belts on the x and y axis so they are running inside the extrusions on the motor side. This is a quick fix and not the ultimate solution. Hopefully this will spark some ideas to others that can improve on it and maybe make a better solution.

I have a CR20 but this should also fit the Ender 3 and maybe other creality printers.

By default the belts are not quite parrallel with the axis which will make them rub against the extrusions and also create some