Just a guess, but the rotating barrel of the compass is probably low poly with six or eight sides. So if it's the physical shape that's causing the problem then I wouldn't count on a quick fix.
But if the graphic "skin" for the compass has too many or too few hashes, then that might be fixed easier. You might post a request in the Skins forum and some expert there might modify one according to your specs, or at least tell you how to do it.
Best