Jeff, A couple of questions.First,you said that you are running all forward bars.Are they narrow spaced or wide spacedIJSecond,you mentioned that you leveled concave.Have you set concave to cylinder bar clearance to zero and readjusted guage,then set concave to 1" and lowered rear of concave to eliminate factory wedgeIJ Third,have you added helical bar extension third from the gearbox above feeder openingIJFourth,have you extended every other cylinder bar on discharge and also shortened remaining four paddles and added short piece of cylinder barIJFifth,have you extended helicals into dischargeIJSixth,you mentioned that you removed every other wire from concave and then reinstalled them.You need to have these removed from both front and rear sections of concave.The only negative effect this will have is unthreshed crop which has not been a problem in corn_soybeans.Seventh,narrow spaced cylinder bars and every other wire removed from seperator grate will cause shoe to be overloaded as you mention.Picture soon to be added to Tips_Gleaner Upgrades Section addressing this problem.Requires some cutting,but well worth the time invested.Eighth,get a hump installed on rock door,material will feed much more even.Nineth,try some low profile cylinder bars on seperator end of cylinder.Tenth,install two F2 toothed style concave bars on seperator grate in the 6 o'clock position.Have I forgot anythingIJlet us know if there is anything else you have done or not.It's time to wake this sleeping animal!!