I went from a 2009 250 rebel to the 1992 cb750 (I know nothing about telltale symptoms). The sound of shifting is a big difference. Requires much more effort to shift into 2nd. The o-ring Chain is lubed with 90 weight oil. Each shift is a clang and requires a stronger lift from my foot. Rear sprocket and chain appears to be in good condition. Too little effort when shifting can lead to a half shift, or some grinding into 2nd. I tend to think nothing is wrong except my weak foot.