So after 9 months of adjusting spring, hammer, & valve back and forth and 1000s of pellets through the chrony I finally got my gun to shoot "good". Now I have an HDD coming but I'm kinda hesitant about putting it in if that means I have to start over from scratch. So I'm curious to what others have experienced when installing the HDD. Do I just drop it in and everything stay the same except the shot count goes up? I'm guessing not

Thanks.