I used an ultimak mount to put the Docter Optic on my SA93. I can't imagine any thing working better. I don't remember any misaligned trunions on the many AK rifles I have owned.
Probably cause you have had decent ones with the right combo of correctly made and assembled parts.
Lots of fly by night elcheapo AK,s out their now. Sadly most of em are american company made trying to cut cost on things. They know what is right and wrong. But choose the low cost max profit model and price their guns the same as well built overseas imports. Some think if it is the same price or slightly cheaper then buying the american one is the way to go. Unbeknownst to that person sometimes they are getting flim flamed by a american company. I'm talking commercial companies, not reputable quality builders that put out excellent built american AK,s. IO Century (made in Vermont guns) Riley ATI are ones to advoid or go look for a Wasr 10 at the comparable price. Skipping assembly steps probably ain't just happening only at IO.
I contacted this guy intially to see if he was interested in trading one of his AKG builds for the Walther G43 I brought back to life. Spoke at lenght to his receptionist. Never heard anything back. No biggie. Got my Arsenal SLR 100H in a trade for it insted.
