The only thing I can think of, that may be interesting is we planted this section of a field that for some darned reason, as long as I can recall was in sod, mostly orchard grass and similar, no real saplings or anything, some weeds etc. After the '08 ice storm, spring of '09 was a mess along all the hedgerows, so it was my job to clean it up and I brought this field back to its old perimeter and the farmer I was helping was going to plant it back into corn. So he mold board plowed it and it was one of the few times I had ever seen the IH 5-18 auto reset spring trip, actually trip, rocks or just that thick root bound sod. Field was a bit odd with a small wooded rock outcrop, actually I kind of like the odd tree or small area within a field you can't plant, gives it some feature, something prominent you can't really change or may not ever cause everyone before you went around it. Great deer blind LOL! Well everything went along as planned but when he planted that entire section the fertilizer was not dropping on that 7000 series JD 6 row planter. He said that to me, and I thought well maybe the spray guy will apply something, but when we went in there to harvest the oats in the adjacent field, the corn was a lush dark green, tall etc. every bit of that field, it looked better than other corn, but of course thats different ground. The same field on the farthest and lowest end, when they harvested, the bearing that has a zerk under the seat of the 6620 combine overheated and it almost went up, thats the one people miss, and I greased that thing numerous times, never knew about it either, he was lucky on that and several thousand later, having to get someone in there where it was to do the repair all was well again. He really spruced this 6620 up to, all new tires, oversize for flotation or traction, apparently had a rear drive set up from a 7000 series, as the fields can get absolutely miserable with soft ground, that must have been the reason, was said that you have to use some care as the oversize tires and the axles on it, tires were a bit much, but he did not get stuck often as much, man did that thing sink one afternoon at my place, trapped water in one spot, thankfully the FWA3150 JD could tow it out while in the same soft ground.