Well, From my experience, I have over 20 trigger techs personally and I spent may and june living out of my truck on the road at 2 day national matches. Shot 8 matches. Only one of them was a local club match. I talk to alot of people at those matches and always carry a few extra triggers, mags, scopes, cans and other parts if I hear of someone needing something. I didnt need to lend anything out except a full rifle to a buddy who was driving through Cody and wanted to shoot the gunwerks nrl hunter match. Someone could have had an issue and I didnt hear about it, but I do let MDs know I have spares so if there is an issues, they do usually hear about it.
Excluding the warranty issue, the only time I have heard of these issues with any frequency is online. Im not denying some people have had issues, but in my experience, there are probably some other factors at play as well. Trigger tech stands behind the product and warranties it if even if the issue isn't theirs. They are good to go in my opinion. I will keep running them.