Thanks for your responses.

Bountyhunter, I am not yet sure if it comes up short of the 2 notches or due to a weak spring doesn't lock, it can be manually rotated back.

Scooter123. Yes it does have end shake. I have bearing sets and have used them on several other used Smiths I own. It will be the 1st step.

What I can see is, the stop is shorter and the stop notch spring is very weak in comparison to my other N Frames.

Thanks for the information on cylinder finger pressure. Your other observations are in synch with what I also observe.

I will correct the end shake and go from there. I know the stop spring also needs to be stronger. Again thanks for the input gentlemen.