I have a JC Higgins Model 50 that I picked that has had its trigger worked on by previous owner. It looks like it has been stoned and a set screw installed but i find its to light and when I engage the safety or disengage it the sear sometimes releases. I have backed out the set screw as much as possible but it still sometimes happens.

I want to go to a new trigger and wondering if anyone can recomend a trigger that they have used and will work in this model.