Hi I am new to this but would appreciate your knowledge I recently bought a 51 a2 for my wife lovely little car secretly I have longed to own one but never got the chance until recently (my car is 93 S2 coupe) the problem I have is the open sky sunroof ,it only open the first panel then stops ,is it supposed to go further ,the glass panel behind looks like it has never been opened ,so could it be stuck?