I received two new IWIS timing chains (not from our host), and when I opened the boxes, here is what I found: the rollers all have seams in them, and they also have more side-to-side play than my old chains.
Is this really how the IWIS chains are made? My original chains do not have seams in the rollers. I wouldn't put these chains on my bicycle!
Part # 99310552900
Here is my original chain:
