I’m so disappointed in this trigger - Timney Triggers AR PCC Trigger

This trigger is supposed to be a drop in trigger for any AR-15 style PCC. I simply could not get to to “drop in” properly in my Palmetto State Armory AR9. I could not get it to line properly. As a result, it took a lot of work to replace the pins. It took a lot of effort to install the safety selector. After installation, the hammer would simply not strike forward or not strike so weakly, the weapon would not fire. In the event when the weapon fired, the trigger would not reset. I have uninstalled, reinstall it, and took it to the range three times; I’ve only been able to shoot a total of 2 rounds. Finally, I’ve decided to return it in exchange for the CMC 9mm PCC trigger. Hopefully i get better luck .