Today was the day I finished the conversion on the Sig Platinum from a Series 80 to the Series 70. The Series 80 parts from Sig are thinner than same parts from Colt. TJ shims from are the correct size for a Colt but required reduction for a correct fit in the Platinum. I had to take the part from 50 thousandths to 49 thousandths. That took a while with 600 grit sandpaper, but boy is it smooth. I also polished (LIGHTLY) both sides of the sear. I don't have the necessary equipment to measure the trigger pull, but it seems to be less than the original (or it may be the Proud Papa syndrome). With what I learned from this (3 1/2 hour) job, I did the same thing to my Gold Cup in 18 minutes. Correct sized drop in part helped with that time.