2 suggestions.
1. Call Carmon at April 1930's. www.april1930s.com Carmon is the husband who does all the FW repairing. April the wife is the sewer. Together they are a terrific team. Yes, they are on eBay also.
2. Purchase a copy of David McCallum's Those Fantastic Featherweights. It is a 2 disc DVD with over 3 hours in instruction. Its $59. Very easy to understand, great up close video.