Damn lunges

So my super blasters are destroying my foot. Specifically my mid foot. I have a 98 mm foot but it starts early near my ankle and the third foot buckle always tears into my foot. The fitter told me that the blaster molds were terrible and that a rx would fit better. At least I know those Rs can be easily punched, but they are a race boot. That means a tight unforgiving fit.....and my feet are totally busted up. I am 198 lbs and I like to ski aggressively. My super blasters are 120 flex and I am sure I can handle the extra flex....but can my sore feet? Any advice for me out there....