I wonder if there is not a spring on the striker??
I own a 24/7 Pro not the DS (which is supposed to be a decocking safety- a feature that came out later that I thought I wanted. Mine is also a Taurus USA one- if that makes a difference- I thought they were all made in Brazil.
Now ya'll got me concerned and will have to go out to the range and shake it a bit. - carefully.
I will still stand by my Tauruses (car and gun) but just like any mass produced item made, there will be flaws. We trade them off-