I was told by a self-proclaimed Deere "expert" that removing the rotor from an STS is approx. a six hour ordeal. The feederhouse must be removed (it comes out the front),and all the tines have to be removed from the rotor to get the rear half out through the smaller diameter front half of cage. Replacment is in reverse order. So you are looking at about 12 hours of downtime just to remove and replace the rotor - and that's not even figuring doing repairs, etc to the rotor itself. Now, it was told this last fall, and it MAY just be rumor, that the STS rock trap only is good for about 20% of the rocks entering the machine. It was also told that the rock trap problems were the reason it took so long to intro the rotary and Deere finally decided to just market it the way it is to counter CAT's combine. Could all just be rumor - I don't know. I haven't even seen one in person yet. As for any new Gleaners, I'd like to see AGCO incorporate the extended helicals, cylinder bars to discharge, helical over feeder inlet into a new P4 processor Series III model designation. Perhaps some refinements to the cabs - NOT TO THE HYDRO HANDlE THOUGH!!! We are farmers, not fighter jet pilots! Perhaps jet pilots wouldn't need "Smart bombs" if they had a simple control stick with buttons located in common sense places! Then, start working on the split-flow P5 processor and that would be worthy of an entirely new letter designation - smallest being a class VI and up to a class IX. I can see them now - S60, S70, S80, S90. ("S" for "Split-flow", of course!) So keep those old reverse bars, they will come in handy for the right side of the split-flow processor! Tom langan