They lock ok for me, but maybe after time they will bcome harder to lock. *shrugs* I have no problems with this.
But yeah she is REALLY tight, even tighter than some of my 1/48's would u believe. Even the legs lock properly in fighter mode!
I am so happy with this 0S, leaves me wanting more, maybe i'll get a second just for Reactive if it cmes out. (hopefully).