If you got them fitted originally for a different boot, chances are your new boot is a different shell size, and has a different sole length (BSL). Your bindings have to be readjusted and the forward pressure reset to accommodate the new size, and possibly your din setting to, as you'll have less leverage over the binding with a longer boot (lower din) and more with a shorter boot (higher din). Binding adjustment is not a repair by any means, that said, it is VERY important to get them set right. Most shops will either do it for free or like max $20.