Dumb bell- head up butt mistake- mine

[M. De Land]

I think when I get the new tumbler I may have to bush the lock plate to get a good bearing fit. I'm quite sure the fly issue is directly attributable to the sloppy bearing fit of the tumbler through the lock plate allowing the **** to wobble side to side through it's stroke. The fly was correctly installed but was chewing up the edge of the sear(making it hang up) because it was canting a bit from loose bearing fit of the tumbler.

Well, got the new tumbler and it was rather crudely cast at the **** square hole purchase but there was enough material to get it to fit snugly using a diamond file.
Got the stirrup installed correctly and the lock now functions without the hang up. I did have to drill out the tumbler bridle hole to the next size and it now fits very snugly as well. The bearing hole through the lock plate is still a bit sloppy but quite a bit better than with the old tumbler.
When I got the whole lock assembled I found the real culprit that was causing the hang up. It turned out to be not only the loose bearing fit through the lock plate but the sear also had a loose fit between the bridle and the lock plate which allowed it to skip partially over the fly and hang up on the half **** ledge. I made a .015 shim/ washer to put between the sear and the bridle which cured the problem by keeping the sear down on the sear boss at the lock plate. The sear boss(elevated area) keeps the sear sides from actually making contact with lock plate.
I guess the tumbler breakage turned out to be a blessing in disguise as the new one cleared up the **** wobble and fixed the sear hang up on the half **** notch by moving the fly back to where it could function properly with the sear adjustment.
The trigger pull is still about twice what I like so today I will install a sear lift and stone the two full **** surfaces.
I like about 3.5 lbs with a crisp break.
I didn't feel the need to have to bush the lock plate with the more snug fit of the new tumbler but even now it is not nearly as well fit as the Siler Deluxe I just bought for my new rifle build.
I can see it takes working on a lock to really see the quality differences in how well the parts are cast and fit. I am not very impressed with L&R locks as they come from the factory but see how they can actually be worked in to fine performers with some effort.
Very interesting project I really enjoyed doing for the learning opportunity.