In reply to Lobsbelow:
Yes, the North Wales Rockfax is a bit limited for a number of crags and you can soon run out of options. However, the definitive CC guide to the area - Meirionnydd - wouldn't have helped you either in this case.
Sounds as if you may have climbed Slabotomy (E1 5a), a 'newish' eliminate which goes up the blank looking slab to the left of Crack 1. " ...pretty thin on hands, feet and gear ..." is a good description although it can be climbed at a lower grade if side runners are placed in Crack 1.
HTH
Dave