"IF" the set trigger is to light this is how TC recommends adjusting the set trigger.
With the gun unloaded and uncapped: Pull the hammer to the half cock position, Set the set trigger. Then turn the adjusting screw (the one between the triggers) clock wise slowly until the trigger mechanism "snaps", when that happens STOP turning the screw. That "snap" marks the instant of total set trigger disengagement. Once the mechanism "snaps" turn the adjustment screw one whole turn (360 degrees) counter clockwise. THIS IS WRITTEN IN RED: THIS IS the Minimum setting for let-off travel with the trigger set. If your require additional let-off travel continue turning the screw Counter clockwise until you reach the desired engagement. In NO event, should the engagement be set at less then one full turn counter clockwise from the point of total set trigger disengagement (the snap point).
My suggestion would be turn the screw 2 complete rotations from where it is at now counter clockwise, then follow the above instructions. Hope this helps. DANNY