I noticed a small crack on the bush of my starter pinion, which otherwise is in perfect shape. My spare, worn out, starter pinion has a nice bush. After pressing them both out I notice one is taller than the other. In the spares they only show one size, not sure which one. Is there a reason for this, is one better than the other, can anyone enlighten me please ? I should mention the starter pinions are identical in height. Thanks for any info, Alyson Oh, and Happy New Year !!