My 686 has a flat piece behind the trigger type of stop and is not really doing me any good, it hits the trigger too late to be useful.
What is the fix? Would a new stop of the original type installed and fitted to hit the trigger sooner do the trick or, a rod in the rebound slide like some other models have?
I need to shorten the overtravel.

if you are referring to the stop that has a machine cut in the frame behind the trigger....that piece is adjustable, but you have to remove the side plate.

however the majority of those stops tie up the trigger and SW recommended they be removed.

Nframes came with the rod and I guess you could order one of them and fit it to your 686.

That's the one I'm talking about. I didn't know it is adjustable, I know that a screw holds it in place.
The other option, the rod, I understand that it can be filed to match the travel. Is there a specific model I should look for? Will it fit my rebound slide or do I have to replace it to match the rod?
Thanks.

I did some comparing of parts and I found that L and N frame guns share the same rebound slide and trigger stop rods.
It seems that the best way to do it would be to remove the existing trigger stop and install a trigger stop rod. These rods are inexpensive and available. The way I see it you keep filing the rod till you achieve the trigger you want.
If you have done such work and you can give me any information, it will be appreciated.

some gunsmiths wont install this type of trigger stop as the potential for breaking the pin which retains the rebound spring is higher if improperly installed.

while I have installed one in my 625 one time, it did not require much dressing.

dont force the trigger or hammer if it does not cock or pull and only remove small amounts at a time.

may want to wait for someone with a Kuhn manual to chime in to confirm the process. I have one but its in a box somewhere.

I thought about that possibility. What is the solution?
What do they use in the late models?

I have made several of them out of a nail. As an earlier poster stated, be careful and don't force cocking or trigger pull and take it down a little at a time.