So I saw Kevin at Footloose today and he had me fitted into a boot in what seemed like 10 minutes - he was also pretty busy with 3 other customers at the same time.
He shell fitted me, then warmed up the liners in some Head Vector 115's and I put them on, they also had a footbed. The first thing I noticed was that the tongue or front didn't squash like the Quest Access 60's I learned on. The other thing was that they seemed way too comfortable for a new boot. Kevin's explanation was that I had a slightly wide foot, but overall an easy one to fit and that he didn't think I would be able to get into a smaller shell. I'm trusting his judgement.
I'll be trying them this AM so hopefully this cures what ails me.