This is exactly right, and exactly why I've been preaching this in the large-frames for so many years now. Gas Timing. This is a BALANCED effort, between the recoil system and the gas system.
It doesn't matter what x-company or y-company produces. Nobody cares. Most of it is manufactured with profits in mind, foremost, making the platform as cheaply as possibly in order to make money. That means shortcuts, on large-frames. That comes in the recoil system, very first, to make it as cheaply as possible. Doing it right is $$$, and tungsten ain't cheap. Neither is stainless steel vs. aluminum, when you're looking at the body-material on a shortass 2.500" buffer.
Then, they have to bastardize the gas system, in order to make a cheap recoil system "operate." They usually "operate" like shiit.
First thing in one of these is "fully inspect and fix the recoil system." After that, determine in your gas system is fucked up, then fix that. Gas tube length is easy to check, and fix. You need to get tools out, and be able to accurately measure gas port diameters - then fix it if necessary.