the problem with having a bootfitter start messing with them is that it can get really expensive. it might be $50 for the first adjustment, which helps but doesn't fix the problem, then another $50 to get it closer and so on and so on till you would have been better off just spending 400 on new boots that will come with free boot work.
my advice would be to get better fitting boots, or if that isn't an option just ghetto rig some foam to make your feet more comfortable until you can afford new boots. imho having a bootfitter start messing around, especially after its been established the boots never fit very great, will be a phenomenal waste of money if you're paying full price.