I just purchased a 1 yr old JD 111 with 20 hp engine 42" cutting deck from my Father-in-law. I used it the first time on fescue and yikes, even at the highest setting it cut my lawn too short. In just 24 hours I already have heat stress. Live in Huntsville, AL. Here is my question - Is there a way to make the higher setting about 1" to 1.5 inches higher when set to the highest setting? I'm hoping there is a mechanical adjustment that will enable me to do this or the mower will be for sale.