Claybird, in obtaining replacement screws, the problem is that with most of them, the screw slot will not orientate to the line of the gun. To most people, this is better than looking at buggered screws. It is a time comsuming job to make them to orientate to the gun. The heads have to be made longer, a slot put in them, tightened in the gun, then mark the correct position of the slot, back to the lathe, cut the head to the right depth of the screw hole, and then cut another slot, then blue it. I just use Oxpho Blue giving it a coat or two.
Grant, if your rib is higher than the old flat or concave rib, then it does have the SSP rib.
The barrels were most likely Belgium with the LLH markings, and hopefully soon Dr.Drew will come on and give you the story on them.
