Picked up a Bergmann 1910/21. Spring issue

I just picked up a Bergmann 1910/21 pistol yesterday and had a heck of a time trying to disassemble it for a good cleaning. The problem appears to be the fit of the recoil spring over the firing pin. It VERY tight. The spring is actually a 2 spring assembly with the firing pin spring riding inside of the recoil spring. Once I got everything all cleaned up it was a bear to re assemble, again because of the tightness in the fit of the recoil spring. Do any of you know of a place to get parts for these pistols or have any suggestions on how to fix this problem?