I wanted a 2 1/2-3" k frame size DA revolver for a long time but just couldn't find the right deal and then along came this stainless 2 3/4" Service Six for a good price($300) so i bought it. Ruger puts strong springs in their DA revolvers so the DA trigger pull was quite stiff...too stiff for accurate shooting so i went to the Wolff site to see what was available. They had RP spring sets for the GP100 and SP101 with several different weight of pull hammer and trigger springs for each but the kit they sell for this gun only had one choice of hammer spring @ 14 lbs and a RP trigger spring so i bought it. Took the gun apart and studied how the parts interact and identified several areas that could be polished up, staying away from sear engagement surfaces. That's polish, not metal removal. That completed i reassembled the gun with the new springs installed. Smoother,but still a very heavy trigger pull. I removed the hammer spring and first cut one full coil of hammer spring and reinstalled spring with the cut end at the hammer strut seat....not much different. Took off another half coil, tried it, alittle better and continued removing half a coil and testing till i got to 2 1/2 coils....much better. Off to the range, fired 50 rds with no FTF,pretty darn good. Went back home, took another half coil....pretty nice DA trigger pull, 100% ignition. Then i used a feeler gauge to measure the gap between the hammer and notch in the frame,same with the trigger and housing. Both "holes" were .010 wider than the parts that rode in em so i took an old feeler gauge and made hammer and trigger shims @ .004 thick. Installed these shims and wow it really smoothed it up. Nice light DA trigger pull, no FTF, i'm really happy with how this worked out. I've got about 12 bucks in this trigger job.....Mike