Thanks for the response.

Kant is not just worried about logical contradictions, though. He is worried about anything that leads to contradictions when you try to will it universally, not just things that lead to logical contradictions. Anything that can't be coherently universalized is something that is unacceptably contradictory.

What other sorts of contradictions are there, asides from logical ones? What would make something contradictory in a non-logical sense? In other words, what is it that that would make it incoherent to universalize something, if not a logical contraction, or a "things going best" outcome related concern?

I would ask your professor for help on this remark.

I have, although it will probably be a while before he responds since he is very busy working on the third volume of his book (he is a rather high profile philosopher, I was lucky to get a class with him). He also tends to be a bit biased in how he presents Kant, so I would my paper to be informed by what philosophical community in general thinks, rather than what he in particular thinks. Although yes, I am awaiting his response.