Here is what I have done to help pull material in the chopper. On the leading edge of the rotating knife I put about 1_2 inch of hard powder with a powder torch. This will do two things. Keep the end from rounding off and create a minor hook on the knife. I did this for 10 years on my M and now on my R. Works in green lentils and chick peas as well as dry wheat. Keep stationary knives sharp.