This isn't a big problem, but these two trails don't align. The nut and lock washer were pulled out of IV Library, oh maybe back in R7 or R8. When I explode them, the trails don't line up. They should though, shouldn't they?? An insert constraint was used on it.
Does in Calculate where to put the trail by the center of gravity? Is that why it is off to the one side, because of the cutout??
Troy