Now thats something worth checking out, I know flighting is worn but the 760 we had was same way,ours is a 82 model and has 5 inch flighting and every machine made in 1983 or newer had 8 inch cross auger and I think there had to be a reason for doing that. I think that if I could find a junker with a good 8 inch auger on, it might be worth trying what I really need is that top piece of the elevator where the chain is on that turns the auger,thats what I have been thinking, that 5inch flighting cant take it away fast enough and its going back down,had a problem with that too--- that top elevator sprocket is just on there with key way and snap rings on each side and it wears and gets all wobbly, I made new shaft and drilled 5_16 hole through it and new sprocket and put spring lock pin in there, no more problems with that,Wow-- that elevator is rated 2000 bushels an hour!with corn at 30% moisture-- i will believe when i see it- mechanic at dealer has worked on these since they came out in the early 70s he told me what it could do so wanted him to show me that thing could handle what he said it could and he never showed up,another time i asked him about it and he said he has been told before that the elevator isnt big enough.I toke injection pump off and toke it to Montevideo, guy over there works only on injection pumps- checked to Perkins specs perfect--he said he sets power up on most all of them and said he give it 20-30 more horse-- seemed a little better but still not even close to the v8.