I've had my cub for about a year now and have a question. This may be hard to explain so please bear with me. I use the deck leveling guage and this is the procedure I go thru. First air tires properly then check outside tip of right blade and then check outside tip of left blade. On deck height setting of 5 my right blade measures exactly 3" and my left blade measures 2 3"4 ". My problem is my deck is adjusted as high as it will go. Is there any other adjustment that is not in the book or I don't know about? Thanks for any help. I know 1/4" is not very much but I have a bad case of OCD.