Twenty years ago had a Ruger Security Six worked over. Came out beautifully. Smooth, crisp light trigger. Finally about wore it out and bought a GP100 to replace it. Put a Wolf spring kit in it and it came out great. Smooth, crisp and light. To be honest with you, it is hard to tell a difference between the worked over polished Security Six and the new GP100 with just a spring kit. Try a spring kit and if your not happy, then spend the money on a smith. And yes a lighter hammer spring makes a big difference.