My TSO 9mm trigger was too light (750 grams) upon arrival. The 'break' always comes unexpected. Many ' accidental discharges' . I was afraid that I had to get rid of an otherwise (accuracy, comfort as for fit etc) perfect gun, maybe best I ever had in my hands.
Tnx to CZ expert Bosko Racovic form Luckydelta.com I found the solution. Install new aluminum trigger + extra trigger spring (one from Shadow 2) and gun is now at 1,3 kg and will reduce to roughly 1,1 kg after break in. Soooo Happy!! Just for your reference.