We bought a Aga Legacy duel fuel 36" oven and installed it last August. We cannot get the main multi-function oven to do anything except bake on convection mode. The conventional and oven assisted modes produce products that quickly brown on the outside without baking the interior. As avid bakers we need a function that will do delicate cakes, etc. Aga has replaced 3 different parts with no success or change in how it bakes. Any suggestions? Has anyone else had problems like this? We are at a loss as to what to try next? The dealer has offered to take it back, but we love it's look in are kitchen? Must we give up?