my M-1 Garand and my Colt .45 acp rattle like a bunch of junk but they work, RELIABLY and i wouldn't trade either for a box of gold. my harleys are noisy and rattle. typical american craftsmanship. goes forever, works fine and drains to the bilge. fix it when it breaks. what can you expect from a piece of a 1903 radial aircraft engine technology?