da Vinci 1.0 Pro Bed Print Area Check

(Click on images for a larger view)
I reently added a drag chain for the wiring going to the hotend on my da Vinci 1.0 Pro printer. After doing so I wanted to check that the drag chain was not in any way preventing the hotend from accessing the entire print area. So I drew up something that would print at the 200mm by 200mm limits of the print area.

I did find the movement in the front left corner to not be as free as it should so I designed a new mounting bracket for the drag chain to address that. But what I found that was of more concern was that the print area is not centered on the bed in the Y axis direction, instead it is skewed towards the front of the bed. The pictures below will show that.

So my first thought was to adjust the Y axis end stop but apparantly XYZ did not design in an adjustment provision for the Y axis sensor assembly.
To the right is a screenshot of something I drew up to show the print area on the bed. It is 200mm wide by 200mm deep. The cones at the four corners are there to easily align the nozzle point when checking travel.

Here is a picture of it printed on the bed.

  To the left is a close up of the front left corner cone. It shows how close the print area is to the front clasps that fasten the bed in place.

To the right is a close up of the rear left corner cone showing the print area by the rear clasps. Notice how much (more) space is between the print area and the rear clasps as compared to the front.

  To the left is a front view of the Y axis end stop sensor assemply. It does not look like there is any adjusment that can be done.

To the right is a view of the sensor assembly from below and to the side.

The picture to the left shows the mounting for the Y axis sensor assembly. The screwdriver is pointing to two plastic pins of the assembly that locate it. There is no provision for adjusting its location. In order to move the sensor slightly rearwards the two pin holes and the two screw holes will need to be elongated.