Bought a 97 a year ago, top only operates manually- one of the plastic ball joints was snapped.  Thinking about selling it so I bought a couple of ball joints to do the repair.  
Some of the pushrods and connecting structure was missing but it was in the trunk so I reassembled it with the new connectors and pushed the top button and held my breath.
First half went ok but as the top got about 2/3 to finish it got held up in the boot cover (the panel that pushed up to let the top go under it). I tried to reverse it gently to see if I could figure out the bottleneck but the top was wedged in at a slight angle.  Rather than damage it, I disassembled it enough to return it to manual.  
I know it's not much to go on but any ideas would help.  I have a Bentley but haven't looked yet.  Any DIY help on this anywhere?
Thanks.
Jb