I am a newbie, just received my Blackstone Pizza Oven, and used it last evening for the first time...we had trouble sliding the pizza from the peel into the oven. We put flour on the peel, pressed the dough into shape and desired thickness (thin), and loaded it with toppings. The problem occurred when trying to slide the pizza from the peel into the oven....it didn't want to go. So, should we flatten the dough on another surface, and then transfer to the peel (with flour), just when ready to put into the oven? Or is there some other advice?