Nope, not a training issue! I owned one that would not regulate, sent it back twice with no luck. Finally was told they wouldn't go any farther with that rifle. Sold it in disgust. Will not deal with that company for any reason! Do NOT believe that they warranty all their products. I will add that I own a bore rifle, a Colindian, and a paradox, and have been able to get all 3 to work very well.
Doug