The key at this point is to to give the boot time to get used to you while giving yourself time to get used to the boot. After spending a reasonable amount of time in the boots, pull the boots off and then remove your socks. This is where a good fitter can save the day. Boot modification techniques are ubiquitous and a good fitter armed with the correct tools can solve virtually any problem. Another thing to consider is the amount of dorsiflexion you ankle joint has.
Dorsiflexion is the amount of upward flexibility the foot has within the ankle joint.
It determines to what degree the skier can flex the boot and how far the skier can drive the tip of the ski, both are very crucial elements in successful and strong skiing. Optimally, a skier will have around 20 degrees of upward flex in the ankle. Have a technician measure your flexibility and make any internal adjustments necessary to your boots to help guarantee that you are positioned correctly in the boot for the amount of flexibility you have in your ankle. Cuff alignment is the process of placing the curvature and stance of the lower leg in to a centralized and aligned position in the upper cuff of the ski boot. Most high quality performance boots offer between 2 and 7 degrees of cuff alignment.