Got the new spring and brass screws today. It may be my imagination (but I don't think so), but Olivia does seem to be hitting better. Not a lot, but better.
I am one of the people that use the set screw. Before installing it, I had to fiddle with Olivia a lot to get her to fire. It was like - fire, fire, fire, mis-fire...fiddle...fiddle...fire, fire, mis-fire...etc. With the set screw in there, Olivia is fiddle-free.
Oh, and that isn't my wood either, but
if it isn't claimed by the time round 8 comes around, you can use it for my OliveR #2.