I have three of these also. A competent gunsmith can work the springs. The problem you are talking about with the trigger is this- the sear extension sits over the trigger, in the TOZ-66s that leg just barely reaches past the top of the trigger. When you feel the "click", the trigger blade has gone off the edge between the sear extensions. I preferred reversing my triggers as i am right-handed and actually bent the top of the trigger blades to better engage the sear extension. I also heated and straightened the hammer spurs, but be gentle if you do this yourself.