In the meantime a solution is documented removing the softtop motor without removing the softtop.
My English is not very well, so sorry for posting German sites but with some pictures:
http://www.zwiki.net/index.php/Hydraulikpumpe_defekt
=> exactly:
http://www.zroadster.com/forum/index...ng-anbei.79900
In words:
Just remove 4 Clips and remve the softtop compartment floor.
Then remove the compartment left and you can see the sound insulation.
Now you have to cut the upper cable tie and destroy the lower cable tie.
At the last you install the motor in the boot and it will be dry for the rest of the car-life.
best regards,
Frank