Ian it sounds like you did exactly what you needed to do. The process of drying ham in the United States is almost a forgotten skill now; but, my history study for the 19th century indicates that green mold is not only expected but desirable as an indication of success. Curing hams dry and smoking was at that time a precursor to storage in a cool dry place where they could be kept over the winter months. Modern ham processing methods now include "country" where the ham is dry smoked and salt cured (for flavor not preservation), and "city" where the ham is wet cured in a salt brine solution also called corning or pickeling. The last elements of folk who actually use "old time" methods is growing ever smaller; but, there are still a few. Please share your entire drying process with use who wish to know.