I have maybe the lowest volume feet on the planet (no, really, they're ridiculous.) I have ankles and calves to match, although the calves are a bit more of a "normal" size, they're still pretty small. I feel that I am REALLY dialed in with an exceptional boot fit thanks to Footloose in Mammoth. I have Zipfit Diva liners in a 22.5, Superfeet Kork footbeds, and last year bought Tecnica Inferno Crush boots in a 22. The boots are 100 flex, stiffer than I've ever owned. They also have a higher cuff than most, which I found gave me a really good biomechanical advantage. My feet are pretty darned happy with this setup.
My issue now is that I am getting more and more aggressive with shin contact and really driving the boots through the turns, but I have room between the liners and my shins unless I tighten them down to a point where they are like tourniquets, and frankly they are TOO stiff. Caveat is I have removed both bolts in the back of the boots to make them a little softer (probably close to a 90-95 flex, I suppose.) I feel the flex is perfect until I tighten the cuff and power strap down.
I'm hoping to get some ideas from you smart'ens here. I have foam tongue inserts but am worried they'll be too squishy. I also have extra power straps from the Zipfits that were removed by Footloose. Any other ideas??
I'm planning to take them in to Footloose next month, but I find it helpful to get ideas from the forums before I go. It helps me make a better educated decision and also perhaps explain to them better what is going on.