You could check out a couple things and let us know a little about your crops and conditions. Maybe start a new post like Tom suggests. I would include info like: Do you ever expect to pick a rock and or how often, what do you have for thresher concaves (hi wide wire front and rear or low narrow wire front),second helical extended across feeder opening on that small P3 yet, full set of wide rasp (3_4") all forward cylinder bars, any wires removed from seperator grate if it is the low narrow wire, any cylinder bars extended into area just ahead of discharge opening, any helicals extended into discharge to complement any cylinder bars that may be extended,IJIJIJ let us know what you got and how far you want to go. You may want to do just a couple more basic things or get more involved. Machine could also fit your operation fine set up just the way it is. Good luck