I have aquired this old rifle and its in fair condition.. It shoots well and develops just over 8ft lbs. I have taken it apart and there are TWO springs in it . Is this normal? Both springs are 13mm long and 2mm in diameter. What spring(s) do I need for this piece? I want to refurbish it . Where can I get parts? It is First world war period. Any help from the experts out there would be appreciated , Thanks...