I've never seen or held a Pedersoli flintlock, but I do have a fair bit of experience with their percussion guns, and locks. Oddly, trigger pull and lock smoothness on those locks seems to be in direct relation to the amount of torque on the bridle screws, especially the one that holds the sear in place. Loosening that (those) screws a bit does not seem to result in them working too loose, they may held in place by the wood behind the screw head. (It doesn't really make sense, but I haven't gone into a lock on the one I use for sporting clays for several years and several thousand rounds with no problems.)
This doesn't help with handling or heavy barrels at all. I have a couple of Pedersoli's from the 1970's, and they are nice handling guns. The first one I bought came from Cabela's with screw-in chokes, and it was awful!
