i put the mcarbo kit in 2 of my p07s. it made a huge difference in DA and SA. i have about 600 rds though 1 p07 and 300 through another with no issues so far.OK. So. I've had my P-07 for a few years now and I bought the M-Carbo spring kit for it. I like the gun and don't want to mess it up. Is there any info on the long term reliability of the spring kit? I carry the gun occasionally but pretty much just keep it in the truck. Any info is appreciated.