I researched if there was any AD issued that I needed to deal with. There was one. It is the installation of brackets to prevent fuel tank swelling and potentially creating problems with the fuel line. I ordered the no-cost parts from Rans. The FB issue is that there needs to be a fuel return line from the header tank to the left-wing fuel tank. Rotax fuel-injected engines require this. We modified the header tank correctly but not the wing tank. I sent an email to Ran's Tech support asking what the retrofit is and what parts are needed.