This is the second in a series of papers concerned with a technique for performing combinatorial and sequential digital logic with magnetic elements and connecting wires only. These elements are termed MAD's (Multi-Aperture Devices). For clarity, in the first paper the basic techniques were described in terms of simple circuit structures which do not represent the best that can be achieved in the way of operational properties. The object of this paper is: 1) to present circuit techniques for significantly improving the circuit operation; and 2) to present experimental and analytic results which are pertinent to an understanding of the coupling loop operation.