Did you guys try to E90 side too?
My old K2's had much smaller crossovers and the bullet in the mid was black. At the time, the Utopia's had the big crossover, polished bullet and gray driver's. Is that the TN-51 tweet?
Let me get this straight... You are swapping out parts designed by some of the top engineers in the world because some guys sponsored by a company told you it's "better??" But when you ask the same guy about tracking, "oh no, I have a kid now" or "I just detailed my car." or "i just got new tires."