OK, thanks to all. I had to look at the pics several times but I think I've got it. I have a new lock in my hand that I bought from LMC that does not have the cover on the back, but does have the threaded hole for the screw. Obviously I need to reuse the screw and cover from the old one and I should be fine. I'll try to update the pics as I go, if I can remember how.
