According to T.A. Weber, Scumback doesn't know the build formula used to make those speakers. Jim tried to get TA to give him the formula over a lunch in Kokomo. TA realized that Scumback wanted to have the speakers produced by someone else in California, and was unwilling to give up any secrets. TA was suspicious that Scumback was attempting to hire away the main Weber speaker building technician, who obviously would also know the secrets.