SBR check this out this may help, [link=http://www.rcuniverse.com/magazine/article_display.cfm?article_id=55]ca hinges[/link]...... also i myself like to run a exacto blade threw both sides to allow more wicking to take place and use 4-5 drops per side, check for fit and adust accordingly where you install the hinges if there to snug, ive done it on several planes and ive had no trouble check for fit and adjust accordingly