I've had a pair (actually 2) for a year now and have similiar issues. The first pair I had major heel slippage and volume issues in, so they agreed to make me a second pair. The second pair feels the same way, minor heel slippage in my left boot and lots in my right made even worse by them putting in the wick liner instead of the clarino like I requested in my first pair. IMO they made the instep depth too deep in both pairs (I can fit over 1 finger under a pencil when doing that test). My turns are great and I can really feel my edges, but I feel like a dump truck when doing quick starts and stops/directional changes. Leaving the top eyelet undone helped me, but it wasn't earth shattering.