Dave,
I acquired a 42 year old Belgian Browning Superpose and have completely restored it. What a find it was
!
I obtained helpful hints assistance from a 'smith friend when I did mine but have since been told that there was an old article in the American Rifleman that compared design differences in the Browning line with a complete tear down diagram. Sorry, but I don't have the article or even a month date reference. I think there is an online index of that magazine that you can search though.
-=[Bob]=-