Hello All,
I tried to take pictures of the gear sets of my late model K-2 gears vs the earlier Straga gears.
However, the results are just so crappy that  I'm not posting them.
I did measure all the gear widths and here are the results in mm :
Driver Gear Widths- 1 Gear    2 Gear   3 Gear   4 Gear   5 Gear   6 Gear
Later                           12.4        15.5      10.1       9.6        9.6        13.4
early                    12.4        11.4      10.1       9.7        9.4        11.5 
Driven Gear Widths:
   Later        12.4        14.5      10.2       9.6        9.4         9.5
     Early    12.4        11.4      10.1       9.7        9.25        9.3
Sorry about thing not lining up.... everything reformatted when I submitted...
Robert