I might add that to check your bifilar coil, you should energize the ends and make sure that it's repulsing a magnet. You should energize the smaller wires, then the larger wires. If those repulse a magnet, then you should check to make sure that when you energize one of the small wires with one of the larger wires that nothings happens (no shorts between the small wires and the large wires).

If those tests come out positive, then you need to look at some other part of the system.