I like to remove the trigger spring I see brownells sell them in 2 different weights
30oz
40oz
I had the factory trigger pull around 5 1/2 lbs
I put a slight bend on both ends of the trigger spring:were she hooks up in the frame under the grips
I now have 56 oz I bent the spring without removing it using 2 needle nose did the job.
I see there is a drift pin in the lower part were the spring sits.I am wondering if I remove the pin will the spring come out and go back without any problems

I really think you should leave this task to a gunsmith who knows what he is doing. For less than fifty bucks you can get it done the right way and spare yourself the grief of an accidental discharge. I am not kidding!