Seth Morrison Full Tilts Killing my Heals

Which footbeds did you get? Without a footbed in the liner the heel will have no protection from impacts. The foot will also generally pronate which could result in a pressure in the outer heel like you are feeling. Sidas are the best bet in my opinion for footbeds as they are the most easily customised. A footbed will hold your heel in the ideal place ie neutral which will often make it appear narrower all of which will help you. They also give a huge improvement in impact protection so again can help with bruised heels. Lastly once the foot is held in neutral you could then get the shell expanded in the heel if you need. Don't ever stretch or grind untill the foot is secured though. A unsupported foot may just spread into extra space potentially making the issue worse.

So overall let is know of you have footbeds and if you don't start there.

Chances are very slim they put you in an incorrectly sized boot if you went to a real fitter.

Actually it's a very high chance they could be the wrong size. Most fitters fit big as it's easier to make a sale that way. But as I said its more likly a surport issue