1) Got Head S11 boots 4 years ago. Fit was tight, but I have a wide foot and that is acceptable.
2) For the 2012/2013 ski season, I put in about 1/4 inch heel lifts. (I have limited dorsiflexion)
3) By the spring of 2013, pain developed on back outside of left heel, with a noticeable bump. I took out the heel lift and padded the painful area with moleskin, molefoam, little donut shaped pads, and combinations thereof. This helped, but pain would develop over the day, and increase from day to day. Clearly this was not a solution.
4) I went to a podiatrist a few weeks ago. He agreed with my thought that it was likely pump pump or Haglund's deformity (I'd been web surfing). We discussed where and when the pain occurred and what I had been doing to deal with the pain and discussed some options. (Pain doesn't seem to develop quickly if I ski groomers. It does develop on bumps, and I even feel it as I'm standing up off the chair lift and when walking in the ski boots. I surmise the forward and back movement is the principal culprit).
Anyway, the podiatrist x-rayed and examined my feet, looked at my custom ski boot footbed and recommended filing/sanding down a little bit on the bottom under the outside part of the heel. He said I'm a bit flat footed, and this would bend my ankle outward and likely reduce the pressure on the painful, pumpbump, area. (My interpretation). He said to continue padding the painful area. He suggested that adding extra space behind the pumpbump would help, but worried that that might not be doable without wrecking the ski boot -- I don't believe he is real familiar with the extent to which ski boots can be modified.
5) I sanded the footbed as suggested. Sanding worked much better than filing. That did help, but the pain still seems to be developing by the end of the day. I haven't skied consecutive days yet so can't tell how pain will increase from day to day.
My Question: I believe that making a little extra room right behind the "pumpbump" will help, and I wonder if local boot fitters are able to grind/punch out in that area with sufficient precision and without wrecking the boot. I'd think a 1 inch diameter or so and 1/8 inch deep hollow would help. What do you think?
Thanks for any suggestions.