The spacebar mold is straight across and doesn't flex much at all. Most perceived looseness is due to the previously mentioned tolerance issues with the stabilizer. If Xarmor had made their stabilizers a bit tighter, I really wouldn't have much to complain about. As for rollover testing using Aquakeytest...
ESDF variations with other keys: fail
ARROW KEY cluster with other keys: fail but most keys work (better than my siig minitouch)