Modified Y-Ends for SmartRap

Even though the base Y-Ends work well, I found that I needed to support the holes to handle more abuse and to extend the bed 'holders' to accommodate surfaces that might sag (like thin acrylic), on which you might mount something like a heatbed. If you use a piece of wood, you don't need this, but because I am using my modified X-Plate, I have to use a thinner bed, which is prone to sagging. So, I modified Serge's Y-Ends to extend them (I just duplicated them and added some blocks in TinkerCAD