Hi Laurie,
I am on my fourth set of primary chains now since I bought the Scott. Is has done about 2.800 miles since then…
I always try to align the box as good as possible (measure the alignment to the milimeter) and when new there are no real tight spots in the chain indicating that the sprockets are not concentric. Of course the marking only starts to occur when the chains are pretty loose already. The marking really is my fault because it just indicates that I was too late with adjusting the chains again. When adjusted the chains clear the drum and flywheel perfectly.
I also wonder how others cope with this. As I always really take the best care in setting the chains up properly and I just cannot think of the cause of this excessive wear.
Cheers,
Erik
