Did you do the "slam fire test" several times? Drop it while cocked on its buttstock?
we don't want Browning going bankrupt cuz one of their triggers "accidentally went off and killed someone when the bolt was closed on a live round and the firing pin drops.
DONT ever lube it with a Teflon oil, only lighter fluid if anything.
Going lower by "jacking" with a factory triggers springs scares the he77 out of me. I do believe you can buy replacement springs to achieve a lighter pull weight .
OR you can nut up and buy a REAL SAFE replacement installed by a REAL gunsmith.
sorry, not picking on you because you do have GREAT taste in rifles... just be safe