I am desperate or I wouldn't ask here and disturb a gun conversation. The lever on my tractor (ford2910) that raises and lowers the implements (bush hog) was supposed to come with a little thumb screw, that when i found the proper height i could lock it in place with this screw. Does anyone know what this part is called and where to find one? The local Ford/New Holland dealer has a new parts guy every week and the latest cannot find it in the book because I can't tell him what its called. I took him outside to the tractors coming in for repairs and showed him the part to no avail. Sorry to put this here, but i know some of you guys are farmers and ranchers and know these things. Thanks for your help!!