Actually, 3500 bu_hr isn't that impressive compared to a Hyperized R72 that cut at a rate of over 4000 bu_hr last fall with only a few mods. Seems it IS possible to get that much crop up the feederhouse and out the discharge on that "20 year old design". And I'll bet the farm that the Hyper R72 had way less grain on the ground behind it than your Kitty. That seems to be the consensus among several guys who have seen Cats run - they go fast and cut a lot of grain, but leave a lot on the ground behind. Can you achieve 1_4 bu_acre loss in 200 bu corn, BrianIJ Be sure to calculate that correctly too - it's not 1_4 PERCENT, but 1_4 BUSHEl. This forum has been a gift from above to many who have made the cheap, do-it-yourself mods that the Hypers, the Brannons, Hurtts, and others have created and tested. And it's only been the last few years this has been available. Perhaps if you would have discovered this sooner, you'd still be in your Gleaner grining like a CAT eatin' crap like we are - that is if you could have found it in your shed since they are so well camo'd with a tin shed! Heck, I would have even sent you a few boxes of those 58 cent dust masks and some ear plugs so you wouldn't get farmer's lung and earaches all the time. I guess now all you'll have to contend with is skinned knuckles and the stress of the additional downtime when the Cat does break down and you have 10 drives to deal with to get to the problem spot. Good luck!