Tremendous progress to report today. I decided to pursue the route of using dedicated IC chips to handle all of the analog multiplexing, signal inversions and voltage shifting. The result was a much more straight forward signal pathway and very very stable circuit design. This is definately the way to proceed. The previous method of designing my own transistor circuits to accomplish this was a waste of time. Now that the primary circuits have been proven, I am ready to proceed to the actual board design in full using smaller form factor chips.
