I can help you with that trigger. Ive torn many of those SOB's apart . I can even smooth out the trigger getting rid of that gritty feel. your trigger mechanism just might need a good cleaning.
This isnt just some add on BS. this rifle has had alot of work. it will shoot 2.5 inch groups at 100 yds with me behind the trigger shooting reloads. It has shot under 2inch with better shooter. Not much is chinese left in this rifle.
she's fun to shoot. Has an issue in the trigger which I've yet to figure out/fix. When you fire the trigger stays back and wont reset. Flick the trigger kinda sideways a bit and it resets just fine and fires again. Surely just a burr in the trigger assembly but I cant seem to get the trigger group apart. Gave myself a "garand thumb" when I tried and then quit, haha.