[John Sabato]

Careful polishing of the surfaces of the overlap between striker and sear can also reduce the trigger put significantly without a lot of measurable metal removed. I would use flat surfaces and 400 to 600 emery cloth or paper and do a few strokes (maybe 10 at a time on each surface?) at a time.

Make sure you start with clean parts, and carefully examine the surfaces under a good magnification to know where you start. Then polish some and re-examine to see what progress you are making. The objective is to remove any roughness from the two surfaces without changing their dimensions. Periodically during your polishing, clean and reassemble with lubrication and test your trigger.

The best part of this work is that you can do it yourself. If it works, all you have spent is your time and the cost of the emery cloth. If it doesn't help enough, then you can start spending some money on good help like from Tom Heller.