My current plug boot cuff was widened to accomodate my cuff muscle via cutting "V" in the back of the lower boot and putting two rivets around the cut. This modification did provide me with needed space, but degrated performance of the boot as I can feel the twist in the cuff of the boot when riding very wide or race skis. Because of the "v" cut, lower boot lost integrity and proper dynamics. The right and left parts of the lover boot flex in different direction as you innitiate the turn ( the outer half flexes forward, while inside half goes back). All that movement of lower boot tears appart the upper boot with the rivets transfering force on opposite directions. I am not even going to mention condition of my shins from all that friction.
So the question is: is there a good way to widen upper part of lower boot and upper boot to accomodate larger cuff muscule?
P.S. womens boots are not an option for the desired level of performance.