Y carriage for prusa i3

The connection between YCarriage and YCarriage_link is a tight fit.
Make sure you remove the overshoot part on the corner.

The reason why I wanna do this is because the model I found here is slightly bigger than my 3D printer's capability. So I try to make it smaller yet stronger.

Also, I want to separate for linear bearing as far as possible to reduce the shaking problem.