Words I still can't say

I was talking to someone this week about the words that give my (chicago/mn)accent away. After four and a half years the words I still can't say are:

Hot Dog
Wisconsin
Costume
Don't
pants

Different variations will fall out of my mouth, especially when tired or after a steady night of drinking.

Also, like most Chicagoans I do still use unnecessary propositions:
Can I come with?
Where are you going to?
Where did you get that from?

Do you think that the "eliminate your accent" signs all over LA are meant for me?