My newly adopted African Grey :}

[danmcq]

Wingy is spot on in regards busting those wing nuts loose and then sliding and angling that perch to get it out. Where you placed that cement perch on the out side looks great. Unless you already perchs you can run back to front for the two sides of the cage, do not move the existing perch going across. I would wait until you can get them in for him to traverse back and forth.