Headlight problem

[stephen2320]

Hello all, i have just aqquired my dream car the audi coupe 2.3 10v 5 cylinder 1993 on a L. mint condition, except, the headlights work fine and so does the stork as far as i know but when i use the headlights they all work fine until i try to use main beam, they work when flashing/pulling stork towards but when i try and put main beam on by pushing away the dipped headlights go out and only the side lights come on then when pulling the stork back into position dipped headlights return? any help on this would be much appreciated. thanks stephen.