Because of a shifting problem, related to broken shift pawl spring, I took the 1990 FLHS 1340 evo, 5 -speed transmission apart. When removing the front gear (belt drive), I noticed a (slight) wear pattern on the pully inside, right where it contacts the spacer. There is no way I can think of an explanation for this, as it indicates there has been rotation/movement between these two parts, despite the nut being extremely tight (as it should). I have searched across the forum, finding a lot about splines gone, belts rubbing, gears grinding into gearbox housing, but nothing matching my concerns. As I am getting ready to put it back together (it all fits, no interference), are there any suggestions from your end? Measurements: Spacer OL: 21.35mm, sprocket center: 13.1mm, sprocket splines extend mainshaft splines by about 1mm (enough to warrant clamping of components when tightening nut), and sprocket clears the gearbox, although marginally, less than 0.5mm my guess. Will try to attach some pics.