I know it's always asked but I have a customer with a great lawn and great landscaping. He was one of my first customers and got me many more jobs by telling friends and neighbors what a great job I do. I get calls saying if your doing Bob's lawn you can do mine.. He has about a 1/4 acre and it would take him and his wife 4 days to finish. He's older.. The thing is he is a major PITA!! He insists I cut his lawn at this elusive height that I'm guessing only his mower cuts at.. Oh yea, I can only use my 22" nothing bigger.. I must have tried every setting on my mower and still can't get the height right... He's got very thick turf and the best setting I've found, that doesn't cut too low and make the grass look brown and ugly is ~3.5 3.75 I would actually like to cut at 4" Any advice?