Quote Originally Posted by joffy View Post
They do different thickness hard nylon Diana seals that’s why I mentioned the transfer port dimensions
You are right joffy if you fit a soft thick seal It will just squash and affect the TP , the seal has to be the right fit to work right if you have the correct thickness seal it can not over squash, If Terry Robb still does the seals they are the correct thickness also they are almost indestructible.

On the 52 and other sliding breech springers the lock up should not be to tight as its the compression from the piston that pushes the cylinder tight on the seal when the gun is fired, that includes the TX its better to have a little play in the shoe the HW with its tight fit can and does get cracked and broken cocking links.
The cocking rod on the 52 and other Diana sideleavers is mostly a spring to keep the leaver closed, you can see here how bendy it is