Hi folks, at my last flight in my '95 O1  the RH speedbrake does not fully retract. the speedbrake is aprox. 1cm out of its house . I recycled the brake three times... always the same result. After shut down the engine and switching the masterswitch off, the speedbrake disappeared correctly in the wing. I attempted a new test, if electric power is on the malfunction is still present. electric power of... speedbrake retract fully. what is the problem?  any suggestion