If the mixture is rich at WOT don't install bigger jets. I don't remember you saying it was rich at WOT. Put in metering rods that'll enrichen the cruise. The small diameter of the rod should be the same but the larger diameter will need to be smaller. In other words if their .070/.049 rods now install .065/.049 rods. If it's still lean at part throttle install .058/.049 rods. Those are just generic numbers I pulled up but they illustrate what change you need to make.
You should not have the secondary air door wired open because that'll cause a huge stumble when you floor it. Wiring the choke open is ok in a warm climate like yours but never wire open the secondary air door.