Replying to Sore Feet.. a Bootfitting Thread

Ok, so a little background info. Been skiing for 15 years, been serious about it for maybe 5. Consider my self an expert and very aggressive skier. I've worked in a shop for 3-4 years as a salesman with boot fitting experience. i'd custom fit skiers of all types (even FIS level racers) as long as they didn't have any major foot problems with little to no complaint.

In the past three years have developed some foot pain that I can't quite figure out. It started out when I was in my FT's about three years ago. A powerful muscle cramp/exhaustion feeling in my arch are on either side. Last season i switched out of my FT's to a Fischer Ranger 12 Vacuum Fit, with Superfeet Carbon insoles (both recommended by the Fischer Rep of Alberta, Mitch Connor), but the pain did not go away. I like my boots tight and got the vacuumed to the tightest setting they would go. The boots are very comfortable done up at this tightness when I'm just sitting around but usually by the 3-5th run my feel become extremely sore or exhausted. The pain usually continues until lunch when i get off my feet for an hour and then are usually good for the rest of the day.

I ski with my boots on very tight and then back them off on the chair each run to increase circulation again. I find my feet are more sore while skiing my fat skis, or on days with shitty conditions. I can rip groomers all day on the boots without a problem.

Do any of you have any suggestions on how to alleviate this discomfort? Anyone have similar problems? Maybe is it time to go to a custom orthodic? Doing boots up too tight while skiing? Any suggestions helps.