We use a 10 year old Long disc mower, still in good shape but need blade holders to put on new blades. Since the bankruptcy of Farmtrac can't seem to find any. Local dealer here said I would have to change out the discs? Any ideas? The Long part number is AMI11105, the bolt comes down from the top and screws in to the holder, I considered putting the bolt type with a locknut on it if I can find the right size.