Shane, thanks for reminding me about crossfeed. Totally forgot about it. Found a couple of schematics over at headwize that will be easy to breadboard......
I think I adjusted the parts till it suited me IIRC. On my photography page you can see a full blown DIY Meier I did for my first Millet hybrid (Corda Cross clone). Tons of wires, but I never got any interference or RF noise amazingly. Somewhere I have a PCB and front/back plates for the Meier Corda Cross-1. Jan was selling the PCB and plates years ago when he was getting rid of all his old stock. I've just never built it. The full blown version works quite nice though.