SpaceKite

Has anyone else encountered a problem where if you place hinges or pivots at some odd angle (for example, 30 deg) on aero parts, such as structural wings and wing segments, the hinge or pivot starts moving but then "jams" at some shallow angle? (specifically what I'm finding to be at 27 deg of rotation from 0 in the target position). I've also found that adding a tweakscaled stock structural panel between the hinge and the aero part seems to fix this.