What are you experiencing with your trans that makes you think it's acting up?
I had mine rebuilt twice under warranty before 12k miles, so it may or may not have something wrong with it.
If you're going to be at the mythical meet this Thursday, I don't mind swapping rides for a comparison. Or sometime this weekend works for me too. I'm in the Lemont/Darien/Woodridge/Bolingbrook area off the I355/I55 interchange.