Some cars had the small (6mm) screw with the head facing aft & some had it facing forward. Turn the adjusting screw in the direction that will make the return spring longer. This will move the top of the clutch arm towards the rear of the car.
You could also have a problem with the hydraulics. The master cylinder could be by-passing &/or there could be air in the system.
Was everything working correctly before the problem started? Or was there work done recently?
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