Yes we have the steel curtain and risers.We tried raising the rear axle by changing holes.In wheat the chaff breaker choked up with beards.We now have the 13 bar JD concave,steel curtain,beater curtain,risers and adj. air foil.Windrowed oats is hard to seperate once on the walkers.This year the 9500 did a cleaner job with this setup.George came and put his kit in but there was never a change in preformance not in wheat,oats or milo.