replacing bottom rollers on D6C, book calls for 3 single flange and 3 double flange rollers. the current set up is not the same left side to right side, not sure which is correct.
so starting from the final drive sprocket, do I start out with a single or double?  this way? sprocket - sf, df, sf, df, sf, df - idler, or this way? sprocket - df, sf, df, sf, df, sf, - idler, any guidance would be appreciated, Thank You, Ricky

This should cover it.....
 

OM, could you please elaborate on the diagram you posted? Looking at the 6 roller diagrams why are there two different options? I have noticed on my ag D5 and d6 cats they are not all the same either. Seems like I find more double flange rollers, maybe because of the hillside farming? Just curious and wanting to learn more, thanks, Mike

As you suspect, more double flange units for hillside work. The down side is they tend to trap and channel more debris.

so what's with the arrows is that "wheel rotation" order ie to even out the wear?