Light primer strikes - Mauser M2

[spook]

I have a .45ACP Mauser M2 and just started experiencing light primer strikes with my handloads. I haven't been able to figure out how to remove the striker spring for replacement. The pistol still sets off the Fiocchi 200 gr HP I carry in the gun. The handloads work fine in my DW Patriot and H&K P9s. I am using WLP primers.

I know this is an oddball gun, but I'm hoping someone can help with the disassembly so it doesn't have to go back to SIG for repair.