I have a new gravely 144z,19hp kaw. 44" deck with factory mulch kit baffles and blades gravely sent. i have been using and am very pleased with it. i think it cuts great and i am probably just being to picky, you know, looking for that PERFECT cut lawn. does lowering or raising the deck or the blades really make any difference or just keep it all level? Just curios if anyone else has had the same thought.