Bruce's points are well taken. Any stoning or dressing on the trigger pieces is just taking off the very thin hard facing layer and then they wear pretty rapid after that. The latest sears by Winchester and Inland have these parts polished from the factory, the ends being bright metal. I might try a slightly weaker trigger spring but not much beyond that. Selective assembly is the best answer. I also lube these contact points on my carbines, something that is absolutely not done on the big M1icon rifle. The oil or grease seems to help somewhat with no ill effects. By design, the carbine trigger is more about safety than accurate shooting. My NPM has the best trigger. Here's a SR-1 shot at 100 yds with handloads.