This is not an uncommon problem. Encountering it myself I made enquiries from one nursery source and was told that within the industry that no definitive, reliable treatement had been found. Instead, more bulbs are grown than they expect to ship. They ship only those bulbs that are seen to be ready to break dormancy. Translated into my own terms, I waited a second year. A high percentage came up, but not all. It's a matter of patience. In nature, many bulbs practice dormancy. It is a means to reduce losses in droughty years. Andrew San Diego