A clear plastic goes over that area and then it is covered by the Borg ship.

Here it is should be upper left of thepicture.

IMG_0098 (resized).JPG

Its hard to tell from your picture (can't see it) but there should be a vertical piece of plastic that prevents a ball from sneaking in underneath the ramp. I marked it in red. Just thought I would mention it - just in case.

Capture_sttng (resized).PNG

Yes - it is the top (rectangle) one in your picture. There is a mounting bracket that holds it vertical.

The other piece goes over the section where the "out" of the plastic Alpha ramp meets the "in" of the left habitrail.

I'll try and get a pic if that would help.

Here is a pic that shows the piece. Looks like one side isn't attached in this pic but the positioning is correct.

DSC09634 (resized).JPG

Here is a pic of the other piece.

DSC09633 (resized).JPG