I have an Integra with multi product unlock. I'm using it with a seed tube monitor module, and a liquid product control module for infurrow. I want to run 2 different corn varieties, one in each half of my 12 row 7200. I know from reading here if you have a hyd drive, Integra needs to see 2 drives to do 2 varieties. How do you do it if you are not running hyd drive through the Integra? Either ground drive, or like I am with having my 20/20 row flow do the clutching and hyd drive.