Not possible, tested in the config file now and it doesn't work with any other numbers than what you can set in the game. There is a new feature in the calculator however that lets you find the perfect DPI to account for the discrepancy. If you select "Advanced Plus" mode you will see the "DPI for 0%" in the output.
Note that most if not all mouse drivers rounds UP to the nearest 50 DPI, so in this example it would be best to set the DPI to 1050 as 1067 would be rounded up to 1100.