OK, I probably owe you a bit more detailed explanation than my original answer. First of all, I am assuming you used the toe caps in the initial fit. OK, you did, moving on... The liner in the Fischer white 130 is pretty thick and soft, most likely that's why your toes are cramped. A liner stretch may help, but based on my own experience most likely it won't. Most of the happy Vac owners I know of have an aftermarket liner- either a ZipFit, or Intuition, or a lace-up race liner. I have a lace-up and I have tons of toe room and I am downsized 2 sizes over my street shoe size. So, DO NOT GET a bigger shell, try getting a thinner liner instead and molding the boot onto that liner. But do not upsize the shell, this is a recipe for problems down the line, especially if the shops told you that your current one if the right size.
I my humble opinion, Fischer is slowly killing a great product by refusing to put a proper liner in the Vacuum boots. They have essentially what amounts to a plug-like fit shell for everyone, but for some weird reason they insist on putting a thick cushy liner into it, designed to compensate for a poorly fitting shell. The thinking is probably- OK, either that liner packs out and gets loose, then you can remold the boot to get a snug fit again, or we mold it tight to begin with, and after the liner packs we are in business. The trouble is that the remold of the boot is a waste of bootfitter's time and an annoyance to the end user (i.e. I'd rather be in a hot tub than on the Vacuum stand), and, face it, no one is willing to suffer crushed toes to wait for the liner packs out. I just wish Fisher included a proper thin incompressible liner in the boot to begin with, or sourced the liner from ZipFit, Intuition, you name it.
Won't catch flak from me.
I had a 2nd localized heating on the toe box and it helped a lot, but not enough. I could stand to ski half day, and I will say it was otherwise a very nice boot (130's) but too small in length. Too cold, cramped, painful. I will say I was surprised to be able to last more than 30 seconds in these things, so there is some credence to the 1st shop telling me to go ski them and come back again. The 2nd shop verified they would have selected the same shell size the 1st shop chose as well, based on Fischer's recommendations. I say bollocks. And they think a footbed will fit in there? Fortunately, my wife has a size smaller foot, and it fits nicely on her, though she says it's a bit tight and still cold. She needs a remold and she has enough room for a footbed. I'll buy here some Hotronics as well. She couldn't imagine how I could fit my foot into this thing. I don't blame the bootfitters necessarily, though they could say bollocks to Fischer too. Probably depends on your foot size w/ respect to the crossover to the next shell size. Maybe I'm on the cusp. If I get another pair for myself, it will be in the next shell size up, I don't care what the fitters say. Then they can fit me down.
I was at Park City, saw a couple w/ Vacs over lunch, obviously very good skiers. Went over to compare notes. He had neoprene covers for leakage and warmth, though he didn't see much help in warmth. She had duct tape over the front. Then she lifted her pants (ahem, cuff that is) and showed me a pair of Hotronics.
I think these things are a good start, They need to move the crossovers so folks end up w/ a larger shell, say a half to full size. I have an 8 1/2 foot in the given 7 1/2 shell. Don't need a World Cup fit, thank you. Just my 2 cents...