Hi Allen,
I know this is probably a silly question, but are you sure it's a 1220X? The reason I ask, is because my 1220X uses 8AA batteries and the coil wire plug is a 5 pin male. My 1225X uses 2 9V batteries and the coil wire is a 5 pin female as you described. I'm trying to think if there was a running change in the models, maybe? Anyways, if it is a 1225 with the 5 pin female plug you mentioned, there are coils available for it. I know there is a 5", and a 10.5" available now, but the price might scare you. They are easy to find used in the classified section. If the machine is indeed a 1220X like mine, not sure about the possibility of coils for it. I hope this helps you.