Okay, I've put up some test images from f1.4 to f8. I really can't identify any backfocusing so maybe you guys can help?
The images are at:
the unofficial Cosina-Voigtlander User Community - CV 35/1.4 SC Nokton Classic
All are 1500px in size and un-edited beyond scanning into CS and saving. The focus point is the flower. Placing the pointer over different areas will allow you to "zoom" that area and you can use the +/- keys to "zoom in/out".
Same roll of film and the shots were taken in sequence. Tri-x in hc-110 (b) for 6:30 @20C.
Thanks!