Source for offset firing pin springs

[Pa SxS]

I needed a new spring for my 12ga Grade 0 hammer gun. This is what I found at True Value. Anything smaller than 7/32 and it will not fit on the firing pin anything bigger and the firing pin chamber will not allow the spring to be in line with the firing pin hole

You can adjust the strength by shortening or lengthing the length of the spring. I've been told by Dewey Vicknair that the strength of the return is not critical, just so that it fully retracts the firing pin.