I posted this to sci.eelctronics.basic, where it probably belongs, but things seem a bit quiet over there at the moment.
Based on previous advice from the groups, I have attempted to revise our circuit utilizing a complimentary pair, and diodes to establish a 1.4V DC offset between the two output signals.
Here is the schematic, if anyone would please be able to comment on mistakes.
If this sounds familliar, there are several of us cooperating on the same project, none obviously any more gifted than the other.
Thank you,
David White