If you are having issues with a manual then you need far more experience, you will not even think about gears after a bit, at first it is a lot to take in for some people.
It is the biggest cop out doing an Auto only test, and I do think that if you can't learn to drive manual you will make a poor driver overal. There is so much going on when you drive and if you can't manage what is a simple part of driving then how are you going to cope with things like losing traction on ice, aquaplaning etc
Far to many people hold a licence when they shouldn't
So prove yourself mate, don't fail before you have even started