If your gun is new and you do not want to do a lot of mods suggested by Iowegan, I'd suggest that you leave the original springs in for a while when you do a lot of dry firing. This way all the mating surfaces will have a chance to smooth themselves out just by rubbing agaisnt each other under higher spring pressure (thus doing it faster). After a couple of thousands of dry-fire clicks you should notice that the trigger feels smoother. (That, or you trigger finger got stronger. :lol: )
At that time you may start experimenting with aftermarket springs. If you change the main spring on a gun that has not been broken in yet, you risk getting light strikes.
While you are replacing the main spring, and 90% of instructions you need are in the manual, you may as well check if the hammer rubs agains the frame and smooth the inside of the frame where it leaves scratch marks on the hammer.