Welcome to the EGGhead Forum - a great place to visit and packed with tips and EGGspert advice! You can also join the conversation and get more information and amazing recipes by following Big Green Egg at:
our 10" stone is slightly smaller than the platesetter, so don't think it's the stone. see pic below. have you tried the cook direct with grid atop the woo, I would drop the temp and use direct radiant heat, as opposed to indirect heat to slightly char the cakes and taters.