Changing the sprockets and chain on the tailings elevator on my 1680. the previous owner had the top sprocket welded on. i cut it off and machined a new key way for the new sprocket. My question is how many spacers are supposed to be in there? when i have it all bolted togeter i have about 1/2 of side to side play. I am thinking it should not have this much. if anyone has an assembly diagram to post that would be great. The spacers i have in there now are one about 1 inch and another about 2 inches and thats all that was in there when i took it apart. Thanks for the help.