The one my neighbor has doesn't have an agitator in any of the boxes , I did seed some orchard grass through the grass seed box , it came out of the box okay it didn't sit up , but the hoses going to openers are long and if you are going down grade a little the seed wouldn't flow it would block up the tube , when I went upgrade it was okay . I only had a few acres to do and once I realized what was happening I drove back empty and finished the field one way. I have a 5100 IH drill with a small seed box but it won't handle OG so to sow OG I mix it with about 25lbs/acre oats and seed it thru the grain box, the oats acts as a carrier to take the grass seed thru , My father did that years ago with an old Ontario drill that we had .If you are planning to seed thru the small seed box you might want to look at how the hoses run to make sure that your seed will flow thru for sure . I have no idea what I did that my other post came up 3 times , oops.