Professional ultrasonic injector cleaning makes a genuinely noticeable difference when deposits are the actual cause and your symptom description does point in that direction. The fuel additive bottles work to a limited degree for maintenance but they’re not really designed to clear established deposits the way a proper off-car cleaning service does. Your concern about harsh chemicals affecting seals is valid and it’s why finding someone who knows Jeep fuel systems specifically matters rather than just any garage offering a generic cleaning service. The wrong approach damages components that then need replacing on top of the original problem.