I have three N7 combines in a custom combining operation. Two of these combines suffer from heating problems during the day, especially when the outside temperature rises over 25 degrees celcius or Seventy five degrees farenheit. They also operate very well if they are not pushed to put out more than ten to twelve pounds boost pressure. Constant fifteen pounds plus boost pressures and heating problems occur. I have recently tried an R62 with less than 200 hours on its engine, same difficulties. Push it in hot weather and it heats. I have also heard that Gleaners don't like to run during the day, but they will run all night no problem. Are there any solutions or suggestions to these difficulties?