I emailed two of the KRAL tuners I could find but have not heard back yet. Seems the worst bugs have been worked out by the tuners now and I am ready to spend my dollars on a tuned gun. Not much of a mechanic at my age and although it might be fun to learn the gun that can come later, I really want to shoot it for now. I know the world of air gun tuners is a strange one, but if rules permit I would enjoy a complete discussion on the Kral airguns of today, not the early generation models, I have read of the problems they had.