More of an update. I pulled the left end panels off the header. The bearing for the auger was spinning in the flangetts and they were both broke. That was all new about 300 hours ago. The left panel is cracked where that bearing mounts. It is also broke at the bottom edge from the front edge back just past where the support plate for the wobble box mounts. The wobble box that I had on there was the style where the lower pin goes completly through the needle bearing. Discovered that the pin is now loose in the arm. The front mount bracket for the wobble box now has a crack in it. This wobble box had been on the head for about 35 hours cutting time at the most. I had welded the lower flange of the panel when I had the first wobble box that was distroyed this summer off. These other issues showed up in the last 35 hours. Talked with a tech at the local dealership and he did find a rpm sitting for the feeder house jackshaft which was 500 rpm. That would make sense as the pulley that drives the wobble box is 10 1/4 inch and the 500 stoke/minute wobble box pulley was also 10 1/4 inch. A one to one ratio. The 600 stoke/minute wobble box pulley had the grove cut much lower in the pulley to get the extra speed. Putting a tach at the wobble box and dialing in the speed of 600 should have the header now running at the speed it was designed for. If my calculations were correct the auger was turning over at about 240 rpm and according to the parts book the standard sprocket sitting produced a speed of 160 rpm. Marshall I agree with you about the slop and now I think I know why. Running 50 percent faster than designed was just shaking everything to death. I have tried Worthington Ag, All State, Abileen Machine, and a couple of local yards that I know of and not a one seems to have parts for a large auger 810 header. So I am going to take the parts in to a local metal shop and see if they can make them. Not sure if I can get blue prints from Case or not but I am sure that would help. If I run into a dead end there then I may have to upgrade to a 1010.