I have been stuck home sick for a few days and spent a good bit of time learning a lot about ski boot fit and adjustment methods. Based on what I've read, it seems like the conclusion that my boots are likely too big from others here is correct. A shell fit shows that there is about 1 inch of clearance at the back and my instep has quite a bit too. I have tried to add padding using neoprene and such just as a trial but the amount needed seems a bit silly considering the liners only have 4 days on them. The amount of play will likely be unreasonable once they start to pack out. That said, I am sure most any shop would do everything possible to not have to honor a guarantee.
Here's a (possibly touchy) question. If the boots really are too far from what I should be in (too big or wrong boot overall), is there anything that I should expect from the shop if they have a "boot fit guarantee"? This situation must happen at times and I am curious what others here have experienced or think would be reasonable. I'm not sure if getting half the price of my current boots on new ones would be too much or not enough. Again, I am going in with the idea of letting the fitter see the situation and tell me what he thinks first; I'm not the type to go in guns blazing (too passive for that).