call kolar @ 262-554-0800 and ask to speak w/ Keith Sprangers. He designed the trigger, and can help you out. The kolar triggers work perfectly right out of the box for 95% of shooters, but those 5% who have problems either experience the 2nd trigger not setting (trigger reset too slow), or doubling/fan-firing (trigger resetting too fast). Also, you said like new, did you purchase this gun new or used? If used, theres always the possibility someone monkeyed w/ the triggers. My guess is your holding the gun loosely to your shoulder, and/or shooting handicap-level loads which is exaserbating the problem. This is usually a 5 min fix @ kolar to change out the block that dictates reset speed. My friend had to have his changed to reset faster, i had to have mine set to reset slower (or maybe it was the other way around, i don't remember, it was a LONG time ago LOL).
At any rate, don't despair, help is only a phone call away.