Went to my local Exmark Dealer on Saturday and got all the info on the 36 fixed deck betl drive and was ready to buy and said I need to sleep on it til Monday since it's gonna rain here for 3 days anyway. I have a stupid question that I am afraid to ask the salesman. How do you (and how hard is it ?) to change the cutting height?? I know the cutting height is preset but I have 1 cust who likes his grass cut about 3/4 of an inch lower than everyone else. Thanks in advance.