That's certainly excellent advice. But detecting a missing wheel spacer would be next to impossible for most anyone. It's virtually impossible to see it when the wheel is properly installed. I'll admit to my failure to notice the absence of the washer on the left side of the axle. Had I been aware of that, it would have been a red flag -- a warning that a closer look at all the bike was needed. I was suckered by the low miles and pristine condition of the machine. I never suspected the wheel had been removed in the short life of the motorcycle.