John, I have had problems over the years always needing a deep hollow or I could not stand up. People attribute that to my 130lb frame and height of 5'6". Now I am still the same weight, much older and apparently an inch or two shorter! I had a disk problem leading to 2 months of severe right leg sciatica, in 2006, after that I had increased problems with my skating ability. In 2008 I stopped a shot on my problem foot on the inside on my right ankle and dragged myself around for 2 months. After that I was told I had a pronation problem in that foot and orthotics seemed to help the problem, but not as good as I had enjoyed skating before. Last year in November 2012 I had another episode of sciatica and again in the right foot, but soon after my podiatrist indicated that my left foot had been effected by this right footed sciatica? I have gone to Superfeet that has just about fixed the original right foot, but not the left nor did any orthotic. I added some shims inside the boot in the proper place and I am just recently feeling a bit better about my skating. I am writing this as I have wondered about problems associated with my pelvis, O/A in my S1-L5, my sciatica, sliding disks (L4-L5) and bulging disks etc. Also the shot I took off the ankle bone only to find out just this summer my tibia is out of whack, Talotarsus syndrome. Spelling may be wrong. This was the first post I saw that may relate to my problem of pelvis etc. and feel you may know more than is in the post. My pronation seems to be in the state of flux - ever changing. I mentioned in several posts that you cannot buy skates now and shift the blades, there is no room in the heel area that allows for any movement. The skate, MLX, designed by Mike Cunningham had the ability to slide the holders sideways to compensate for pronation, but when the skate was sold to Easton (Mako) they did not bother to include this wonderful feature. If there is any advice you can give me I would appreciate it. Thanks - Alan Sheppard