What Voodoo said and if that doesn't work another option to try is to channel your inner 80's.
Cut the top off a long sock and roll it up like an ankle sweat band as a shelf for the AFAK to sit on. Then wear a sock over it with AFAK over that. IF this makes sense.
I always wear tall Danner boots as I need the ankle support after the VA got a hold of my tibia, fibula and ankle. SO I don't run into this problem much.