Raimey, as usual, I think you have nailed my question concerning my particular 7 pin back action sidelock. I know that it all depends on what type of action but knowing where the mainspring screw is very helpful on a back action. Bar actions are a bit easier.

Once again, I want to extend my thanks to "all that have contributed" to this thread and have further my on going education regarding sidelocks. There is so much to learn and so little time to learn it all. Guess that is why I like this forum so much---very helpful replies and knowledgeable people always willing to share!!!!

paul