Test fitting W925 B & C to flap bracket. Read that having a alignment skin / brace to have 925 B to rest against will help align bracket (tool acts as a 'skin' to keep angle aligned. Test fitting - drilling rear spar hole for 925B first - need to be CS to get tight fit. Then using Skin Bracket Alignment Tool can clamp bracket in place to drill next holes. Clamped angle brackets and drilled holes
