One of the best Featherweight experts I have seen is Nova Montgomery. Her website is:
www.NovaMontgomery.com
She has parts, instructions, classes on how to do your own repairs, more Featherweights than you can imagine and answered my quieries very promptly. I think I originally found her name on this forum.I would say don't let anyone mess with your FW unless they know what they are doing as they will probably really mess it up.