No disrespect combiness . . .
I was advised to do the opposite with regard to filler plates, remove them for wheat-eating capacity. I've bounced around the advice on filler plates a great deal. The one thing I've settled on them making sense for is high moisture corn. You'll get advice from both sides on this one to be sure.
For what it's worth, I did remove mine for wheat last year. However, I had never run it in wheat before. . .so no real comparison. I bought my bine from a dairy farmer, he did high moisture corn, kinda adds up. (Mine is a 4420)