I started my day fitting the TNW semi auto trigger bar. Seeing how there is NO reference out there and no one here ever seems to answer the really technical questions, I just had to file and pray for the best.
So I milled out the trigger gate and made a new one with some 3/16th scrap. I got out my oxy/mapp kit and fired it up. For some reason It never got hot enough (maybe its that giant heat sink of a receiver) and I never got it brazed correctly. I knocked it out and was ready to weld it in when I heard....TINK....the distinct sound of metal snapping. One of my welds cracked. The little section below the charging handle slot. So I ground it down and spotted it with my POS HF welder. Well, this little dimensional tolerance caused my freshly welded trigger gate to crack.....lets start all over again. Took me two more tries till I got it right. All night and about 8 beers. I had the receiver perfectly fitted before this mishap, now everything is binding again.
Needless to say this has me a tad upset. But what I cannot figure out, for the life of me, is how the semi TNW mods all work together. It appears that the new trigger/roller set up pushes upwards on the trigger bar. That much Ive figured out. But as far as sear release/reset??? Ugh.......
So that was my night. Hopefully it will still be there in the morning!