I guess this is one of those little things that we don't foresee until it happens.
I was working with the 35 Remington today, went to remove the barrel and it wouldn't come off the frame, finally figured out that the
small extractor cam roll pin had worked partially out preventing barrel removal!!
So anyone reusing roll pins that feel a little bit loose when reinstalled may want to either use new roll pins(best), or do as I did as a quick remedy and stake the pin in with a centerpunch offsetting a little bit of metal on each side of the hole to prevent the roll pin from working its way out. A little Loctite may work too.
I've added this to the Ejector to Extractor conversion thread in the FAQs.
Tim