Brilliant cage! um, i am really bad at exsplaining things, but hopefully you should be able to understand. ok, were you want the door, put cable ties there and then hold the door closed with bulldog clips or mabey even a clothes peg for the time being. I am just making my doors today, so if you want I can pm you a close up photo??
actually I have a a better way of exsplaining it. ok, see on your botton level,you have 4 connectors on each grid. take 2 connectors of of the 2nd grid from the left(take the grids of from the left hand side of that grid). after you have taken those of, cable tie the side that you have taken them of of together with the grid next to it. then do the same thing with the second grid from the right hand side, but take the connectors of from the right hand side of that grid this time. That probopbly makes no sense. but i hope it helps. ??