Jewell comes with 3 trigger springs, A-B-C, with spring A installed adjustable from 8.0 oz to 48oz. I want to install spring B adjustable from 2.0 oz to16oz. I know they go under the trigger screw, take one out and install another. But what is the next step to get it adjusted to about 6oz. Do I just adjust trigger screw or do I have to do some adjusting on sear engagement and overtravel screws also. I thought it would be a good Idea to ask someone that's done it before I start, thanks