There are no drop in parts to make things smoother as you put it. Messing with the trigger pull would invalidate the warranty.
Most DAO ,or the new Taurus DA/SA style type triggers break in the 6 to 8 pounds of pull category. Some may be more than that. So do Glocks and other similar guns.It is the nature of the beast.
This is a use the way it is or get the PT1911. The Complete Book of Autopistols and Gun Tests give the PT1911 and PT145 high marks in all areas. So there is positive press out there for Taurus products. Even the 24/7 is getting good vibes with gun writers.