Hello Alfred,
The rollers look identical to the ones in the German photograph(they have the serrated roller surface).
The pins are identical also, with a circular top and the longitudinal splines,they are differant at the bottom ,all they have is a smaller diameter extension that is hollow so that you can peen them over (just like the original pins).
Removal was straight forward,drill off the old peened/rivet section,knock out the pin.
Refit the pin through the check strap and roller, knock the pin into the check strap so the splines are located into the strap assy: and peen over the rivet section.
Hope you can follow all that,sorry no photographs i must get a digital camera.