I am not satisfied with my veneers. I feel that they are too big and too bulky. They look more like caps than my actual teeth. I have expressed these conerns with my dentist and he continues to recommend contouring and adjustments. I have been doing this for two years (about every 6months). I feel that it is being prolonged to prevent me from getting them completely replaced. Is there a time limit before being charged the entire fee over?