Hey y'all, just finished replacing my rear right axle on my 99 mule 550. The old one teeth rounded out where the brake drum grabs it. But now i can't get the drum to seat on the new axle far enough, yes i put axles side by side, identical, i can reverse the drum and it slides right on the axle so i know it goes on fine. It's a really bad design anyways with such a tiny line of teeth to rely on to drive the wheel. Does anyone know if the new brake drums have deeper teeth to grab more of the axle?? Or any ideas why im having a hard time with this damn thing?