I have this pre 64 model 94 Winchester 30/30 with a circa date of 1939. The shoulder stock has been cut to allow for a recoil pad to be put on it. I am wanting to put the correct stock on it. Are the stocks the same size throughout the years? Seems to me some of the older ones, have a more drastic curve to them where the come up to the shoulder. Does anyone know where I can find info out on this and maybe a link to where I can purchase one?