replacing the breech 0-ring , any tips. ?

did you do a tissue test to see if it leaking first

that looks like a small nightmare and the reason I say that is there was a thread on getting the LDC off the other day for cleaning the barrel

but the mounts 2 grub screws seem to be, let say glued on and HW likes there glue and the easy way was to just unscrew the tube off the mount

are there grub screws in the weaver mount holding the barrel ???

with no parts diagram I don't know but I will be watching to see the answer, I have a friend that just got one and loves his