Hi Cobra,
I don't have a hatch in mine either.

I just wanted to show a method of constructing one, since it was asked about. My instructions must have failed, since you mentioned it needs to go in the top.

This is so hard. I can build the hatch in an hour or explain face to face in about 10 minutes.

I have more and more admiration for someone like CaffeenMan who puts up a web site where the instructions are so clear.

Later guys,
John