Parts source for old Deere spreader??

[HCJtractor]

I am restoring an old John Deere LF fertilizer distributor. I found an original manual, parts list, pre delivery guide on E-Bay. I would like to replace several old worn parts. Any ideas as to sources for discontinued Deere parts. I have found some things in the past from Sweigard Bros of Pa. Any other ideas? Anyone have one with a worn out hopper that they need to part out. Slim Chance!! Any ideas would be appreciated.