I have series II MRB on my 8810 air seeder and am having troubles with them building up with mud and stop turning. We have heavy clay soil that sticks bad when its wet, and it is #[email protected]*% wet this year, just got started today! They work great when its dry but we just keep getting wet springs here. They all have new disks, and scrapers and I've tried all the settings for the tension on the scrapers. I would love some advice, Im out of ideas. Does anyone use the mid row shanks? how do you like them? Could i switch to them without to much trouble? I have 3 inch packers so would the shanks leave it rough? Any advice would be appreciated thanks.