As an owner of this fine air rifle, I’m just pleased as punch. As Southern Gunner stated in his video, the regulator can’t be adjusted, and no power adjusters can be added. However, there is a company that makes a kit to enable adding a TSS and adjusting the power. He replaces the factory spring, adds a new back plug that is drilled and tapped for an adjustment screw. Not only can you increase the power, but cocking effort is greatly reduced. At least that ts what the guy said in his video. (No, I don’t have first hand knowledge, yet.) As soon as I scrape up enough pennies, I will get the kit and install it in my fortitude. That is if I can find the video again. Lol
Mike