Conclusion:
Either I'm not good enough at python, python is the wrong tool, or the cut and paste was too big to brute force.
This may sound obvious but have you tried to actually test the code you wrote with an example? The problem may be in your code.
Choose some of the variations (with 1, 2, 3, ... transposition) at random and generate their addresses then enter that address in your code and start the search to see if it can find the correct answer. This way you can be sure that your code is fine.
This is what I meant, or share the code you used. Sorry if it sounds a bit rude but all we have is your word that "it doesnt work", have you really tested your code correctly and verified that even after iterating through all the options it didnt work? Are you sure you're generating the seed using the same method bitaddress.org uses? Are you sure you're checking the address using the right derivation? There's so many things you have to double check to see if your code is correct that I'm more inclined to believe it's something wrong on your end, not the dice roll or the cut.