Are you certain that you are talking about SINGLE ACTION trigger break?
Typically that is much lighter than DA pull. Not to mention SA pull is only a 16th of an inch or so
Springs will usually make things lighter, polishing makes things smoother.
If there is an issue with the action then a gunsmith is what you need.
To smooth out a double action pull, pay a gunsmith money to stone the action or each night as you watch the news pull the trigger until your finger gets tired. At the end of a month the pull will be much smoother