Owned four at one time, even Bowen told me there's nothing much that can be done other than reducing the trigger pull and some cosmetic changes. FA is very cautious about owners tinkering with their revolvers, especially the 83. FA was sued because of the lack of a Ruger type hammer block in the 83.
What exactly are you wanting to do?
I would like to completely disassemble my FA's like I do with all my other guns. I clean them thoroughly at least once a year; all except the FA's. Over on another gun forum where I don't like to post (because they don't allow gun sales classified if you can believe that), there was a recent question about how to re-insert the two springs that pop out when you release the grip frame from the main frame (I believe they are the trigger return and bolt springs (and the do pop out). So far, the OP has been given NOTHING and these forum folk are some of the cognoscenti in the single action game. I saw a similar post or two over the year on that same forum and still NADA.... one answer was "call FA". Every gun company has been sued for something, yet videos and detail manuals abound. The question prevails: "Why not Freedom Arms".
J.