Using Federal Primers you should have no problems with a Wolff Reduced Power Ribbed Main Spring.
I normally do not have any problems with a 13 pound Rebound Spring. I have a 12 in one of my revolvers that also works fine.
Springs are cheap, and you can always change them again.
Option Number 2: Install either a 12 or 13 pound Rebound Spring.
Install a Wolff Ribbed Full Power or Reduced Power main spring. Tighten the strain screw all the way down. Then start backing the strain screw off 1/4 turn at a time, and test fire until you start having lite strikes. Put Blue Loc Tite on the Strain Screw and again tighten it up. Then back it off to 1/2 turn from where you started having miss fires. You should have a pretty good trigger at this point.
A little polishing of the internals should not hurt either. Watch a few You Tube vidios on trigger jobs first.
Bob
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ICORE MO2908
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