I'm new to this forum and it has been recommended to me that there are many experts that are very helpful here. I am working on several J and K frame 22 long rifle revolvers and find double action light strikes are consistent. I have put the K frames back to factory specification with new springs and the correct strain screws and they seem to fire reasonably consistently. The J frame is another story. It is a 34-1 in like new condition. I removed the side plate and cleaned the varnish out and re-lubed it. I fires everything when shot single action but only four out of six in double action. I ordered Wolff springs and even the 9 pound spring didn't fire a full cylinder. An 11 pound spring might do it if anyone can point me to a supplier. I called Wolff and they have nothing over 9 pounds and they were not surprised about the consistent light strikes.