What is exact problem with existing unit?
It's not very hard to make new cables, nor it requires any special to do that - just angle grinder, 1 kg hammer, drilling machine and a few drills in the diameter of cable in question [likely 2 mm] and also piece of new cable and small piece of thick metal, some 8-10 mm. My mk2 golf has self made front power windows regulators, which I made up from existing mk2 manual regulator rails, B3 saloon front power window motors [identical to mk2 ones, apart from power cable], existing cable casings and self made cables.
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