I purchased the 22lr yesterday after doing lots of investigating. I see where some people do performance trigger and spring upgrades. Mostly Galloway parts. I have only fired 2 rounds from the new gun this morning , just to do so. Will be shooting it a lot this weekend. I have learned that it can be ammo sensitive , and the upgrades will help this. Anyone familiar with the upgrades ? Have you done any of them , if so , which ones , and was it an improvement. Thanks for any info you can share