My 19S ankles are fine too, just recently transformed it from fighter to Gerwalk mode last month after it spent a year or two in fighter mode and on a stand, the ankles are still stiff like they day I got it. The problem with loose ankles occured with the other 19 models such as the the VF-19 Kai, F, and P, and later with the VF-17's. And now the Arcadia YF-19 has also inherited the loose ankle problem. I don't don't know why the 19S ankle is far superior to the others but they should look into that, so they can avoid future problems.