just a question, how long between the rebuild and re-start the car ? I'm asking this because 2 weeks ago i had the same problem with a 19 16v who stood in the corner for 2 years.

On iddle impossible to select a gear, tought the bearing or pressureplate was gone. Did a jumpstart (1 gear and give it a go), problem solved, the clutch sticking because it was not used for 2 years.

Its worth the try before you take the gb back off. If it dont work, then i'm affraid the friction plate sits backwards.

Good luck.