[. . . ] [. . . ] â· Oe Glue joints can loosen even though they appear to be tight. If you notice irregular flight, investigate the cause and repair it before the next flight. â· Oe Even though the kit's supplied with fitted linkages, improperly assembling then can result in binding or loose control surfaces. Make sure all linkages are tight and control surfases move properly before flying. [. . . ] [. . . ]