I don't know if I can properly describe the procedure on a web forum - I think it'd be better in person. Since I'm in Detroit, it'd take me a while to get to Perryville, and splicing the main brace isn't something you want to put off for too long (proper maintenance and all), so I'd recommend trying to find someone local to help you. I bet if you walk the dock asking for help, you'd find plenty of people willing and able, sailors are usually pretty friendly when it comes to splicing the main brace.
Good Luck!
K