attn USDOJ
I recently purchased two 637 "Wyatt Deep Cover" which have the Performance Center shield on the frame side. They're lovely and I would not modify them. However, the rebound spring is much lighter than on the standard Js. After literally 1000's of rounds through unmodified J-frames, it has not been easy to get accustomed to the 'softer' trigger return of the new 637s. A 'smith says they're perfect and are set especially to slightly lighten the DA pull while getting a full mainspring strike.
I've also noticed that, on the yoke, the notch for the crane retention screw is not cut all the way around, but is instead a smaller V-shape (possible to tighten the crane when in battery?).
Any similarities to the above on your gun? Awfully nice gun, by the way. Stay safe, partner.
Kaaskop49
Shield #5103