What do you mean by sticky? Does the trigger swing freely with very little resistance when the magnets above the trigger are removed? If there is mechanical resistance, then something is interfering with the movement. If your Tunablade has a roller bearing, tap the trigger axel pin on the opposite side of the trigger from the install side. It might free up the trigger if the bearing has gotten pushed against the side of the grip frame.
Except for the Automag in front, its usually the man behind the equipment that counts.