which fischer model did he put you in? if it was the all yellow or black and white models, probably not a love match even with vacuum forming. the fischer vacuum can be a problem solver for certain feet, however if your feet and toes are falling asleep from nerve compression over the top of the foot, the fischer has a very low roof and does not expand a ton over the top of your instep bump.
in the big picture of boot fitting 2 mediocre tries is not yet a total loss.
keep trying, but switch the search from the perfect boot to the perfect boot fitter. your solution is about matching your foot shape and performance needs to the correct boot shell. the tecnica dragon and fischer vacuum come from two very different planets.
it ain't rocket science it is boot fitting.
and if you cannot find the fitter to solve your dilemma, you can always go to sports authority and get the wrong boot in the wrong size at a great price, hell the prices are so low you might want to buy the entire pair.