Is it a variant 10 detent plate without a decock position. I haven't ever changed mine, so I'm not competent to tell you what else could be wrong regarding perhaps an improper re-assembly. BIG BORE or some of the other wizards of the PRO may be able to guide you.
There is a little flag looking metal piece with a spring around the "flag pole" portion of it. This piece returns your control lever after de-cocking. Check that it is not hanging up on something. That is all that comes immediately to mind. Sorry, just got off work...12 hour shift..
Thanks, all. It was a burr/roughness on the edge of the detent plate--the V1 safety, being right next to the detent plate, had just a bit more mechanical advantage than the V2 on the far side of the gun. I didn't want to force anything.
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