Sounds like you may need an extended firing pin. You can effectively lengthen the current firing pin by removing it from the hammer and grinding .010 off the face of the hammer, thus allowing it (and the firing pin) to go .010 more forward. When grinding, make sure to keep the face at the original angle. A belt sander or disk sander works well for this.

Measure the front to back thickness with a caliper before you start. You can check your progress to see how much has been removed. Then assemble the hammer nose to the hammer and recheck for firing pin wobble to make sure there is no interference in the new position.