Done that.  No luck.  I don't have a corn head for it yet, so I can't quite visualize the top of the housing, but I assume its just based on some sort of a "gravity wedge type clamp, and not bolted or clamped in place on the topIJ  I have been kicking dirt and scratching my head on this for a couple of days, and while my boots aren't worn through yet, I don't have enough hair left that I want to lose any more.  Do you think the 34" tires could make that much of a differenceIJ  If I don't find another solution, I guess I could let the air out of the tires to see if that lowers the combine enough so bring "bottom dead center" of the housing below the lip on the headerIJ