Ok, latest developments.
First, I notice yesterday that even though the ladies are approaching twelve weeks old they are still stepping and 'falling' between the roosting bars. It doesn't hurt them or anything like that but it's just like they take a step and there's a 'stair' there they weren't expecting. There legs reach all the way to the pan beneith, it's just a bit odd.
Second, the top of the Eglu is getting harder to move. I have to lift it a little and give it a good shove to slide it forward to get in. This probably has something to do with the larger gap forming on one side. I'm going to guess that this is because we manufactured our own side piece/mounting bracket but I'm not sure. It looked and felt secure with what we put in there, but maybe it's allowing shifting??? Either way I can still get the top open and the gap isn't going to get the girls wet either so we should be good.
Otherwise the girls are happy and chirping away. I do wish I had gotten the extra extension though, give them a little more room to run.