After roughly 2500 shots my center spring failed along with sear bearing. I contacted TTI through Facebook, receiving a reply within 24 hours with part sizing and exploded diagram. For those who are interested, replacement springs are same spec as Laylax and bearing size is 3*6*2.5 mm. I was able to purchase a four pack of bearings for $7 on Amazon and had spare Laylax springs on hand. Time to complete repairs: roughly 20 minutes. I really cannot fault them for spring and bearing failures. As for the rest of the trigger, it has help up great.