has a lot to do with the boots id say. shops can get you with super tight boots that are like 2 sizes smaller than what you normally wear, and then they also heat mold it to your foot.... im not much of a fan, i endure the pains and joys of riding what i deem to be the 'right' size boot, although the custom footbeds thing seems to be the only way to go for many people.
so basically, check your gear and stance and where you're landing as far as fore and aft goes!
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'eat the FOOD!'