BMW Z4 in the workshop

I helped my customer find this car last year and whilst it has been good overall it recently developed a fault with the roof mechanism. The motor for the pump sits in a plastic bucket that sits in another plastic bucket that fills up with water when the drains get blocked. Oops. It was dropped off on Friday, today I removed the roof and stripped off the motor, tomorrow I am hoping to get it all back together with a new motor and cleaned drains as it has an appointment on Friday.