I can't say I have, I've never had problems with them before, then all of a sudden both were causing me serious grief the last time I played. What are the instep thingys, are they for sports use or everyday? I'm keen to try anything to be honest.
My collection is a bit erratic to be honest, it was only recently I started to collate them. I'll have a look through and if I find any that you haven't got I'll bring them to football, as and when my achilles have stopped hurting :(