Have you tried searching and/or asking on the Supra or Moomba forums. It's kinda strange but there is much more activity and newer Supra owners on the Moomba site than on the Supra site.
What are the factory presets you are running and how do you have your boat weighted with extra ballast or people? What's wrong with your wave, what would you like it to do? Do you want it bigger or longer?
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