That's a little bit more than my knowledge, I should take experts help to do that !
Not hard at all.
Just have to buy a device that measures the trigger weight. I'm not entirely sure what it's called though. Simple enough to use though. Just hook it onto the trigger and pull slowly. I believe it stops measuring when the trigger pulls back.
I'm new to this for the most part as well, so in just saying what I've seen on YouTube




















































