Combines N7 Shoe IJ

If your vertical seals along the front edges are worn it will allow some grain to leak out along the side boards. You might be able to loosen and adjust your side boards inwards also. Pull the chaffer and sieve and look along the front edges for air gaps

Check accelerator rolls first. See if you can insert a pensil between the rolls and slide left to right. If not they should be doing the trick well enough for heavier seed crops. Check the notes on Bison rotor posted August 24th. Gap you talk about is normal and should be uniform all the way across. Never paid much attention to it unless it was noticeably crooked and then a guy will likely find some cracking near mounts. Check all the things noted in previous post and you'll likely find the problem. Good luck