Ok guys now I need some help finding some parts for my 76 grain drill. what I need is clutch, sprocket, &amp; shifter for the grass seeder drive. 340 051 BB clutch,340 055BA sprocket,340 127B shifter upper,&amp; 340128-B shifter lower Maibach's did locate the upper clutch for me but I still need the rest. any help would be great!