Cool - as I'd hoped the dodgy ankle was a relatively easy fix, the epoxy is setting as I type. Though re-examining the lower legs as I reinforced them I realise I misremembered where the gate was - the gate was cleverly hidden in the knee joint, the dodgy ankle coincided with a particularly... 3D seam line, which could account for its flaws!
Nonetheless I'm aware this is a rather picky review, and I think I should reiterate that I wouldn't hesitate to pick up another kit for myself.