If you're tracking the car as much as you are, then I'd buy Clubsports. There should be no reason to retain the EDC if it's mainly a track car.
I'm also guessing that this is a hardware incompatibility issue, but like everyone else, its a guess.
Like you mentioned, the labor is getting costly if you continue to have this problem. I'd pony up and get a set of KW 2 way Clubsports.
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