I have suspicions too, now. I didn't see any changes to the hammer but I'm gonna look more closely at the trigger.

Ken-L, here's a pic of it in half-cock position.(if I'm lucky)

For the historians, it's a 60-4 serial BFVxxxx. Factory said Mar. 1091.

I put 25 rounds thru it from SA today. It shoots wonderfully well. Very light pull. I'm guessing less than three pounds. I hafta find a way to measure that.