I would suggest contacting Ruger first. I also suggest if you don't know what you're doing take it to a competent smith. Triggers are nothing to fool around with.A good friend reworked several of my M-77 triggers. He did a great job on them and they break around 3- 3.5 #'s. They can be cleaned up well by someone who knows what they are doing.

Ruger Redhawk